Below you will find answers to the most frequently asked questions concerning our services.

Defect & Error

There are three possible cases

  • Self induced damage – You have damaged the card yourself. The creation of a new card will cost you 20€.
  • age induced wear – If your Athena Card is older than three years (according to the printing date in the database) and the Athena Card is faulty through wear, we exchange it for a new one free of charge.
  • Faults without an obvious cause – If you Athena Card is faulty without there being any obvious damage, we will exchange it for a new one free of charge.

Please bring along your faulty card in any case. The exchange is only possible at the service desk Stadtmitte.

This is usually the case if the Athena Card was removed too early from a booking device, e.g. before a booking process could be completed. You must return to the exact same device which created the error and place the card there again until the booking process is completed. The error code shows which device is responsible for the error. The staff of the Student Affairs [Studierendenwerk] at the checkouts of the canteen as well as the staff of the HRZ service counter at Stadtmitte can help you with this.

You can have the credit on your Athena Card by out only by the Studierendenwerk. The exact process is described on the website of the Hochschulgastronomie:http://studierendenwerkdarmstadt.de/hochschulgastronomie/chipkarten/auszahlung-defekter-chipkarten/

After being paid out you can replace your Athena Card with a new one at our service counter.

Lost, exchange and return

If you have lost your Athena Card you should block your readers account at the ULB as soon as possible.

A refund of you credit is not possible.

A replacement costs 20 € and is carried out by the HRZ service. Please check if you have uploaded a photograph to the account management system [Accountverwaltung].

Should a lost Athena Card be returned to the HRZ service counter, we will inform you via the email address listed in the account management system.

If your Athena Card has been stolen and you have reported this to the police, a replacement card will be issued free of charge.

You should block your library card number at the ULB as soon as possible.

Unfortunately, a refund by the Student Affairs [Studierendenwerk] is not possible.

The Athena Card loses its validity after the retirement from TU Darmstadt (e.g. exmatriculation or termination of employment) and may be destroyed by the user.

If you change your name (whether it is first or last name), you can have a new Athena Card issued free of charge. If your name has already been changed in the internal IDM system, you can simply bring your old Athena card to the service counter. There you can have the new Athena Card issued directly.

Athena Card details

The Athena Card is issued to all students and employees at TU Darmstadt. Click here for further information.

To receive a Athena Card please upload a photo in the user portal. Read more

The Athena Card does not replace the mobility card. It only serves to identify yourself as an employee of the TU Darmstadt at a ticket control. The Mobility Card is only valid in combination with an Athena Card with photo

The Athena Card is only meant for students and employees of TU Darmstadt.

The following people do NOT receive an Athena Card: Part-time lecturers, “Freunde der TU Darmstadt”, visiting researchers, students of other universities and all external people.

If you require a library card for the University and State Library (ULB Card), please contact the staff there. The staff of the canteen checkouts can help you with the chip cards of the Studierendenwerk.

The portrait photograph must be taken face-on and the face must be clearly visible. Further information can be found here .

The naming of titles, including academic titles, is not provided for on the Athena Card.

Do not sign the Athena Card! The Athena Card is valid without a signature. The thermal printing field will be rendered useless for later operation when signed.

At the Studierendenwerk Darmstadt, only the 17-digit card number (top left on the card) and the status (e.g. “Studierende_r TUD”, “Studierende_r HDA”, “Mitarbeiter_in TUD” or “Mitarbeiter_in Studierendenwerk”) are used when using the Athena card as an electronic purse. All transaction data of the electronic purse are stored for 10 years within the legal retention period for electronic cash register systems and then deleted.


You can print via the pool PCs with your print credit or with your laptops, if they are in the network of TU Darmstadt. You can find further information in our instructions .

The PC pool opening hours can be viewed here .

Your printing order will be added to the printing queue and will be processed as soon as it is next in line.

Your printing order will be printed via the next available pool printer.

The prices depend on the queues used. A detailed list can be found in the price overview .

The paper used is listed in our price overview .

You can order prints at the workspaces in the PC pools on campus Stadtmitte and on campus Lichtwiese .

After configuring your PC , you can also order prints from your own PC within the TU network.

You can find the configuration you need for printing in the PC pools for Windows , Linux and OS X here.

You can find the required drivers in the configuration manuals . See the previous question for your OS.

Print credits

You can recharge your print credit via the transfer bookers in the PC pools. Further information about the recharging process of your print credit can be found here .

The print credit is displayed in the print clients after logging in.

The transfer bookers also display the print credit during the recharge process.

Yes, you can find a summary in the user overview page.

Yes, you can find an overview in the user overview page. There you can also download your booking overview as PDF.

The booking process will take place within a few seconds for both charging the print credit and printing.

The “starting credit” that the HRZ granted to first semester students in the past will no longer be available as of wintersemester 2016/17.

Fault report

Please report your problems via our fault report form so that we can solve these problems as soon as possible.

Prefix and Share can theoretically have the same name. Please note that only the following characters may be used: “A-Z”, “a-z”, “0-9”.

Note: The full name of the share is made up of the prefix (max. 5 characters) and the name of the share, connected by a hyphen.

Our recommendation: Use e.g. the abbreviation of your field of expertise as prefix. The prefix should be unique and is used for all your shares.

Customers of the file service can request an increase in storage space using this form .

Customers of the Workplace Support (APB) are supported by the APB, i.e. filestorage is part of the IT Workplace Management Services. Please contact the support if you need more storage space.

A guide to group administration in the IDM can be found here (opens in new tab) .

A description of the systematics of the authorisation groups can be found in the service description. (opens in new tab)

  1. Open the file explorer (e.g. Win+E) and select “This PC” on the right side of the window. Now click on “Computer” at the top of the window and then click on “Connect network drive” in the bar that appears.
  2. Select a free drive letter in the line “Drive” in the new window.
  3. Enter the address of your network drive in the “Folder” line.
    \\fsc-tu.hrz.tu-darmstadt.de\XXXXXXXX, whereby X is to be replaced by the name of the share (basic folder).
  4. Leave the check mark for “Reconnect at login” checked.
    In addition, check the box with “Establish connection with other login information” and click “Finish”.
  5. In the now appearing entry mask enter ads\TU-ID (your TU-ID) as user ID and the corresponding password.
  6. Confirm the window with “OK”. The connection is now established and the network drive is visible in your file explorer.


  • t may happen that you get an error message when trying to connect to the new share. This indicates that you do not have sufficient permissions. But you' re sure or have checked that your service representative has given you the necessary permissions? Try to restart the computer, usually the share can be accessed afterwards.
  • The drive can also be used at home when dialing in via an external provider. In this case, a VPN tunnel to the TU-Darmstadt network must be used. For further information please have a look at the service TU VPN .

This can have several reasons.

  • You are using an outdated operating system. Upgrade your operating system to a current version supported by the manufacturer. These automatically support the required connection protocol SMB 2.x and higher (Linux users* may need to adjust the connection parameters).
  • Are you outside the TU network? (WLAN at home, in a café, etc.). If so, you must first establish a connection via a TU-VPN before you can access your file service memory. For information on the TU-VPN, click here .

General information

After a user with quota has left the employment at TU Darmstadt, the data stored by him/her in his/her personal area will be retained for a period of one month and then automatically deleted. If the user is a student, the period is approximately 90 days.

It makes no difference whether he/she uploaded the files him/herself or by releasing them to a third party.

In the case of users without a quota, the corresponding account will be deleted after they leave their studies or their guest status has expired, and the assigned authorisations will be withdrawn immediately.

In the case of external users, the HRZ reserves the right to delete access after a longer period of non-use (from 6 months).

An account created by an external person is valid without restrictions with the corresponding password. If the user has not logged in for 6 months, it will be deleted from the system.

Several people have access to functional addresses, so that several people would have access to the same Hessenbox account.

This would make it impossible to differentiate in the logging of actions and it would no longer be possible to see who has made changes.

Functional addresses are therefore not permitted. A share with read/write rights of folders to several people is an alternative solution.

With large amounts of data, synchronization problems may occur if the client loses the connection to the server in between. This may cause data or content to be lost from files.

We recommend that you copy the files/folders and then delete them in the “old” folder instead of moving them (cut + paste). Additionally it is useful to deactivate the synchronisation during the copying process or to close the client in order to start the synchronisation only after the successful local copying.

No, the synchronised files can be of any size as long as the allocated storage space is sufficient.

The Hessenbox takes up many times more storage space locally than the actual file size.

This is because the Hessenbox Client stores the version history and thus consumes more storage space as the number of file versions increases.

Solution: The number of saved versions can be set for both the local file system and the online backup

Go to the Hessenbox application and open one of its directories. Under Settings you will find the item “Local file history”. This is the number of versions that are stored locally. To save local storage space you can deactivate the local versioning and delete the previously stored local versions with “x”. The historical versions remain on the server.

You can find instructions here .

The permissions can only be assigned to folders, a subfolder or file-related permission is not possible.

In order to share individual files with different persons, a separate folder must be created for each person or authorisation group.

To store files in a folder via WebDAV, the URL:


and the user name and password of the Hessenbox account must be used as access data. FOLDERNAME in the URL stands for the name of the folder.

Prerequisite is that writing rights are available for the folder.

Error messages

Symptom: Although the first login to the Hessenbox-DA worked, the login attempt now shows that the password is incorrect, both in the web portal and in the desktop client. In TUCaN, Moodle and the access-protected institute pages, however, login with the TU-ID works without any problems.

Problem: The TU-ID is not used for login or the agreement to the Hessenbox terms of use in the IDM portal and/or the required release of storage capacity is missing.

Solution: Use only your TU-ID to log in to the Hessenbox-DA. You must also agree to the Hessenbox terms of use on the IIDM portal in advance. The agreement is made in the personal account in the menu “Zustimmungen”.

As an employee you have more storage capacity available in the Hessenbox. However, this is not automatically allocated to you when you change your status.

Solution: In case of a status change, new employees have to register in the IDM-Portal. The additional storage capacity can be activated there in the “Agreements” (in German “Zustimmungen”) section.

Symptom: A folder in the Hessenbox is to be excluded from synchronisation. As soon as the menu item “Exclude” is right-clicked on a folder, the folder is not displayed in the web interface, neither for the user nor for other users of the folder.


  • With “Stop sync”, only the synchronisation is no longer executed. The data stored on the client and the server and any other clients are retained. The data will continue to be synchronised between the server and the other clients.
  • With “Exclude from synchronisation” the data is deleted from the server and thus from the web. With other clients connected to the folder, however, they are retained, they are only marked there with “not synchronised”.


The checkmark at “Synchronise” must be removed. If the checkmark is set, the “Exclude” list is also synchronised with the other clients. If it is interpreted incorrectly it may lead to data loss.

You can find instructions here .

Symptom: A folder you have been invited for can be seen via the Hessenbox web interface, but the synchronisation of the folder with the Hessenbox client does not work, even if the client has been uninstalled and reinstalled.


  1. In the Hessenbox client, right click on the folder and select “Stop Sync”.
  2. In the pop-up window that appears, check “Delete local metadata” and “Delete local files” and click on “Stop Sync”.
  3. Then click on the greyed out folder to set it up again.

Files remain in the “File history” after deleting. This enables you to restore files after they have been mistakenly deleted. The file history occupies quota just like the “ real ” files.

Solution: The number of saved versions can be reduced. To do this, select the folder and choose “Verwalten” (Manage) in the web interface at the top right. After saving the new number of versions, also check that the recycle bin does not contain too much data.

In the client, the versions can be reduced by marking the folder and then selecting the “Einstellungen” (Settings) tab on the right.

For reading shared folders of other Hessenbox accounts, no separate storage space is required; to create files yourself, you must activate storage space for your Hessenbox-DA account.

You give your consent to the Hessenbox-DA in the Identity Management of the TU Darmstadt (IDM) in your personal account under the menu item “Consents” (in German: “Zustimmungen”, in the left menu).

The storage space must be activated in the IDM under Consents for the Hessenbox-DA.

Symptom: No files can be opened in the Hessenbox Android App. The message “FILE CANNOT BE TRANSMISSIONED” appears at each attempt.

Solution: The memory access must be set (enabled) manually in the Android App settings.

Invitations to folders are no longer accepted automatically, they must be actively accepted by the invited person.

see instructions: “manage/remove folder members” (in the web interface)

After you have shared a folder, the invited person will receive an e-mail informing him/her of the invitation. As soon as this person has accepted the invitation, you will also receive an e-mail informing you that your invitation has been accepted.

The simultaneous use of several PowerFolder based clients on one device is not simple. The client software, no matter with which branding, always uses the same configuration files as the original software without further configuration. When installing a new client, the data of the other, already installed client will be overwritten. This results in a mess.

For advanced users there is the possibility to start multiple instances via command line parameters.

Example for the use of the Hessenbox and LRZ client:

If the Hessenbox DA Client is already installed and the LRZ Client is to be added, the link properties in the start menu have to be added at the end in the link properties at the target:

Hessenbox DA: -z

LRZ Sync&Share: -z -c LRZ

All questions on the topics “Service Groupware”, “Groupware basic supply”, “customer in service groupware / not customer in service groupware” … are answered in this FAQ .

Employees of the TU Darmstadt can use their employee Athene card to borrow transponders in our HRZ service centres in a fully digital process.

It is explicitly desired that employees can borrow more than one transponder, so that they can give transponders to other people (students, external lecturers, etc.) on their own initiative. The employee whose Athene card was used to register the TU ID is and remains responsible for returning the transponder.

We have collected everything worth knowing under the top link “Access to the microphones” .

We lend the transponders for one semester only and ask you to return them to the HRZ-Service afterwards. The transponders are valid for one semester. It is not possible to renew the loan transponders online.

Staff members can have a personal transponder activated from the TU Darmstadt locking system for the microphones. To do so, please contact the corresponding office in Department IV.

If the batteries of your transponder weaken over time, you can have them replaced free of charge and at any time by the HRZ Service.

This depends on the lecture hall for which you are planning an event. We have compiled a detailed answer to this question under the link events .

Further information on the transmission between selected lecture halls can be found here .

The problem is easily circumvented. It is only necessary to buy a low-priced DVI/HDMI to VGA adapter with which it is possible to establish compatibility with the media technology used.

Usually, your laptop manufacturer offers a suitable adapter. If no manufacturer-specific models are available, we can recommend the following products:

  • Logilink USB 2.0 to DVI/VGA/HDMI Multi-Display adapter
  • Club3D SenseVision USB 2.0. to DVI/HDMI adapter

The interface to the media technology is the VGA socket on the connection panel in the hall. The operating model for media technology in the lecture halls is based on the “Bring-In-Multimedia” concept.

The demand on the installed media technology in a hall is: “robust” and “indestructible”. Although the installed technology is generally monitored permanently online, not all parts of the systems can be monitored in detail.

TU Darmstadt does not have staff to supervise the lecture halls, so there are no regular function checks on site! VGA cables are unfortunately wearing parts, they are broken after some time. VGA cables are also so mobile that they are often unintentionally packed by teachers and perhaps intentionally by others.

Since mmAG can never ensure that a functioning VGA cable is actually present in the room, it is more useful to bring this cable into the room with the mobile device. Even “tying” a VGA cable in the hall is not a satisfactory solution, because “tied” VGA cables will only break down faster.

Conclusion: It is a small additional effort for teachers to bring their own VGA cable, but this small additional effort ensures that teachers can use the robust technology in the TU Darmstadt lecture halls easily and reliably over the long term.

It is almost never possible to operate a Smartboard in conjunction with a MuFu variant, since a projection solution for a seminar room always tries to produce the largest possible image, positioned as high up on the projection surface as possible.

With an interactive whiteboard, however, the entire screen surface must be accessible by hand, even if the person operating the whiteboard is not 2m tall.

Interactive whiteboards are usually operated with a special projector with a very short focal length. The beamer is typically mounted on a boom of less than 1m length, directly above the smartboard. Ideally, the Smartboard, boom and thus also the beamer are height-adjustable as one unit (like a blackboard).

Interactive whiteboards only work in conjunction with a computer and laptop connected to the whiteboard. This is operated by the user. It would not make sense to use a centrally operated beamer control on a decentrally operated computer.

Therefore we do not offer interactive whiteboards.

The lecture halls of the TU Darmstadt cannot be serviced daily for logistical reasons. Therefore, it is unfortunately necessary that the lecturers themselves are responsible for the replacement of the foil rolls for lecture purposes. Usually the rolls of foil are deposited with the janitors and can also be received there.

Alternatively, it is also possible to obtain new rolls of film from the HRZ Service.

Please return the described and used film rolls to the janitors, the HRZ-Service offices or by internal mail to mmAG Stadtmitte.

Planning is still the HRZ's responsibility, whether it involves new appointments or conversions. You can contact us at the e-mail address to arrange an appointment on site. The costs of setting up the network are financed about half centrally and half decentrally.

At present, the switch is also financed centrally as part of the initial equipment. If the institute operates the network on its own, the switch is handed over to the institute and must be inventoried there.

Each institutes network has exactly one defined transfer point to the university network. This was defined as the end of the FO path at the institute distributor. The HRZ must therefore ensure the functionality at this point. The institute is responsible for the operation after this FO connection.

Via this interface the institute is provided with its IP subnetwork area.

The institute network can be operated as a service by the HRZ . Alternatively, the network can be operated by the institute on its own responsibility. In this case the interface is the FO cable to the building network.

Most importantly, there must be adequate cabling. Please contact directly in this case.

If an institute commissions the HRZ to operate the network, the HRZ takes over the maintenance and troubleshooting of the institute network up to the data socket in the institute. For this purpose, the active device (switch) is included in the network management of the HRZ and monitored for operational status and security.

This model also allows further configurations like different or distributed networks (VLANs). The institute is given read-only access to the port configuration and traffic accounting via a web account.

The software of the switches is kept up to date in consultation with the institute, and defective devices (switches) at the institute are replaced within one working day.

The HRZ ensures the operation of the network up to the data socket on the workstation computer. The costs for this are charged at 25 EURO/year per active switch connection and connected end device.

If an institution operates the network on its own, the HRZ must be given two contact persons who can be contacted in the event of operational disruptions or security breaches. These contact persons are the domain agents and can register, deregister and re-register computers in the assigned address area.

The transfer point is clearly defined in the self-operated network by means of a transfer point at a floor distributor specified by the customer. In any case, problems can be reported via the HRZ service by telephone, e-mail or via the web interface to a competent office at the HRZ.

After checking the interface defined for the institute, the client is informed. If the error is on the HRZ side, it will be corrected as soon as possible. If the error is in the institute's network, the HRZ can be commissioned as a service provider for troubleshooting within the scope of its personnel possibilities (however, there are no binding response times, as errors in the core network and with contract customers are given higher priority). In this case, billing is on an hourly basis. The hourly rate was set at 60 euros for internal university customers and 70 euros for external customers.

  • First, a consultation is held, during which the exact procedure is clarified.
  • A network service agreement is concluded, which comes into force at a previously determined start.
  • The production of a uniform marking standard is carried out.
  • Inclusion of the existing infrastructure in the cable management system.
  • Furthermore, the network connections required by the customer are included.
  • Installation and commissioning of the new switch infrastructure is carried out in parallel with the customer's existing infrastructure in order to minimize downtime during a changeover.
  • Finally, the connections are switched over (with the least possible downtime).
  • The changeover is completed by setting up web access to the port management system, which ensures an up-to-date overview of the switched connections.

No, services from the HRZ can also be used in the self-operated network. Examples are firewall, DHCP or NTP. In the opposite case, own, already existing services can also be integrated into a network service contract. For example: an institute's own firewall, existing servers or local private networks.

Please contact our mail distribution list or by telephone at 71112.

Web mail portal

You can access the mail portal of TU Darmstadt at https://webmail.tu-darmstadt.de.

Instructions for the initial setup of your webmail mailbox can be found here .

If you forgot your password then read on in the paragraph “Help, I forgot my password”. Otherwise, first check whether you have set up an active forwarding for your mailbox in the IDM of TU Darmstadt. To do so, go to the tab Student E-Mail Address. Now activate the radio-button Send E-Mails to my Mailbox at TU Darmstadt. The creation of your mailbox now takes about one hour. Then try to log in again. If this does not solve the problem either, please check your registration data again and then contact the HRZ Service .

As a student you can have a new password sent to you at https://www.idm.tu-darmstadt.de/passwordRecovery.

As an employee, please contact your local administrator.

In the Inbox tab, you can select the mail to be deleted and remove it by clicking Delete. The mail is now displayed as “Deleted” and by clicking on Hide deleted, deleted mails are no longer displayed. With Show deleted, the deleted mails are shown again. To restore a deleted mail, you can select the mail and remove the Deleted mark by clicking Restore. To delete the deleted mails correctly, click on Delete permanently in the lower right corner.

Attention! If you have set that deleted mails should be moved to the trash, then you will need extra storage space to delete mails, because the mail is only marked as Deleted in the inbox, but is additionally copied to the trash. The trash bin also provides additional quota, but this is also limited and therefore filled in at some point.

At the beginning of the month, Webmail may display this message. The standard task of maintenance work is to delete old file attachments from mails. If you are unsure whether you want to perform this action, click Skip maintenance work.


If you are using Thunderbird, you can set the outgoing mail server (SMTP).

You can find instructions here .

If you are using Outlook, you need to add a full email account to set up an alternative outgoing mail address. Instructions can be found here .

If you set up a forwarding to an external address, we cannot guarantee that the forwarded mail will actually reach you. The reason for this can be, for example, that the sender server has a policy that prevents forwarding via the TU Darmstadt server (SPF entries/checks).

You can find current host lists here.

In a /30 and /29 subnet, all IP addresses can be assigned except the network, gateway and broadcast address.

From a /28 subnet and larger, all addresses can be assigned by the institute, except the network, gateway and broadcast address and an additional IP address below the gateway address.

If a computer name or IP address is changed, the old entry must first be deleted (enter an “L” in the status field). Afterwards, a normal new registration (status = “N”) of the computer is carried out.

If other fields (e.g. hardware address or supervisor) are to be changed, it is sufficient to resend the logon record with an “A” in the status field.

The MAC address is a globally unique number of the network card and is assigned during manufacture. It is required by the HRZ for troubleshooting and in some areas for IP allocation (DHCP/BOOTP) and security. The address is usually represented as 6 two-digit hexadecimal numbers separated by dashes or colons, e.g. 00:00:C0:11:24:4a

If the MAC address is displayed as 44-45-53-54-00-00, this is not correct! (see below).

How do I find out the MAC adress?

On almost all current network cards there is a sticker with the MAC address, often with the addition “Node Address” or “Hardware Address”. The serial number may look similar, but usually has nothing to do with the MAC address.

How do I find out the MAC adress using Windows?

From the command line you can use ipconfig /all to output the network configuration. The MAC address is the physical address.

How do I find out the MAC adress using Linux?

With /sbin/ifconfig you get the interface data displayed. The MAC is the HWAddr for the interface eth0.

How do I find out the MAC adress using MAC OS?

In the apple menu you can access a screen via Apple System Profiler/Network Overview/AppleTalk. There you find the MAC address as hardware address.

IPv6 addresses can also be registered with the new computer registration tool. A short explanation can be found on the HRZ pages, for further questions please send a short mail to .

For many services, such as SFP, DKIM or domain verification, it is necessary to enter a TXT record in the DNS.

Registration takes place as usual via the computer login .

Database: TXT

Status: N
Domain: <Domain>
Name: <Name in der Domain oder @ falls der Eintrag für die Domain selbst ist>
Data: <TXT-Daten>


Database: TXT

Status: N
Domain: starfleet.tu-darmstadt.de
Name: @
Data: google-site-verification=xyz


The devices can scan up to DIN-A3.


The scans are provided exclusively as e-mail to the TU e-mail address stored in the IDM portal. Delivery to external e-mail accounts is not possible.

No, that's not possible.

Login and usage

Athene card, TU-ID and password must be entered via the display keyboard.

Yes, it is also possible to log in via the on-screen keyboard with TU-ID and password.

You can scan when the PC pools are open. The opening hours of the PC pools can be viewed here .

We charge 1ct per scanned page to finance equipment and maintenance.

The scans are paid via the print credit. Information about the print credit can be found here .

The scan service can also be used by 'Freunde der TU'. Please note the following:

  • In the IDM portal in the section “Kontaktdaten verwalten” a TU e-mail address must be stored as the primary address. 'Freunde der TU' can therefore only use the <name>@freunde.tu-darmstadt.de.
  • To use the scanner you have to log in directly with the TU-ID, because 'Freunde der TU' do not have an Athena card.
  • The print account must have a credit balance (if necessary, recharge it first)

Fault report

Please don't hesitate to report problems via our fault report form , so that we can solve the problems as soon as possible.

Your primary e-mail address stored at the TU-ID is used as identifier for the ShareLaTeX account. If this address changes, e.g. due to a change of status or name, a new account will be created in ShareLaTeX instead of calling up your previous account.

In this case, please contact us by email: . We will link your previous account to your new email address.

Note: Please do not create any new projects until then.

There are errors in your project, but ShareLaTeX does not display them directly. Instead, the compilation process lead to a timeout (5 minutes).

Solution: Do the following to get the exact error messages displayed.

  • Create a document named 'latexmkrc' (without file extension) in the root directory of your project.
  • Write the following as content:
    $pdflatex = 'pdflatex --halt-on-error %O %S';
    $lualatex = 'lualatex --halt-on-error %O %S';
    $xelatex = 'xelatex --halt-on-error %O %S';
    $latex = 'latex --halt-on-error %O %S';
  • The project now stops the compilation process at the first error and reports it to the logs and output files. This way you can gradually fix possible errors of your project.

Source: https://de.overleaf.com/learn/how-to/Why_do_I_keep_getting_the_compile_timeout_error_message%3F

Since the update to TexLive 2021 the compilation of ShareLaTeX projects does not work correctly when using the siunitx package. The reason for this is that the new version 3 of the siunitx package is not always compatible with already existing LaTeX projects that are using this package.

Solution: The easiest and fastest way is to use the package in an older version. To do this, add the following line of code:

  • \usepackage{siunitx}[=v2]

Note: The new TU templates from version 3.14 are not affected by this problem. Likewise, newly created projects after the end of May 2021.

There is a fixed upper limit of 2000 comments in total per project. This applies to both visible and resolved comments.

Solution: Delete the comments you no longer need by clicking the “Resolved Comments” icon and then clicking the “Delete” button.

Deleting unneeded comments in your project

If you want external partners without TU-ID to work on your project, you can invite them via the feature “Link-sharing”.

You will find instructions on how to do this here: https://sharelatex.tu-darmstadt.de/learn/how-to/Sharing_a_project

Note: When using “Link-sharing”, it is not possible to track the name in the comments, as people access anonymously via the link. Similar to GoogleDocs or DropBox when sharing a link without a login.

The option “Inviting named collaborators” only works for people with TU-ID. Be sure to use the TU email address (..@tu-da..) if you want to invite collaborators.

Instructions on how to use SharePoint, information for key users and answers to frequently asked questions can be found on this page .

Jabber client

Jabber is set by default to make calls via a Cisco end device. If you want to make calls via your PC, you have to set it up once.

To do this, click on the icon in the right corner of the Jabber main window and select “Use my computer” (Meinen Computer verwenden) there. This setting will remain until you change it again.

You can find detailed instructions here (in German): Cisco Jabber – Telefonate am PC führen (opens in new tab)

Setting: Make phone calls on the PC

Please use the Jabber client on another operating system (Windows/MacOS) or the mobile client (Android/IPhone).

Linux support is planned as part of the upcoming UC project.

Experienced users can also use the chat function with alternative clients. These must support XMPP and encryption. Please use TU-ID@hrz.tu-darmstadt.de and your password to log in. Due to the large number of clients, the HRZ is unfortunately unable to offer any further support.

When a direct message (@name) is written to a member in a group chat, a standard filter is activated, which displays an unread message for the addressed user. The unread filter messages can be read using the drop-down menu of the group chats.

With 'New filter' you can create your own filters.

If you join a chat group, you will be informed about new information in the group by sound or visual pop-up messages. If these messages bother you, you can suppress them.

Follow the steps below:

  • Click on the “Rooms” (=“Räume”) icon in Jabber, then double-click to open the chat group you want to mute.
  • Click on the small “i” icon, to the left of the chat group name. A new window will open.
  • Now click on the “Mute room” (=“Raum stummschalten”) button.

Note: Remember to unmute the setting if you want to receive notification of new messages again. Unmuting the room is done in the same way.

Instruction with pictures (opens in new tab)

In despite to a traditional table based telephone (which is permanently connected to the telephone system) the software based Jabber-Client is only in ready state if the application is started and connected to the telephone system. In case of Laptop/Smartphone or what else is in state Power-save, Power-off, application not running oder no network connection established, the calling person gets the message “Telefon nicht registriert”.
What to do to avoid this?
Best choice: switch on your mailbox and setup a call forwarding for type “out of service”.

In case of an longer absence (e.g. holiday): do a call-forwarding to the internal call-number of your person at charge.

See our video tutorials for more information.

Setting the status information to “Do not disturb” ensures that the Jabber Client will not signal any more calls.

The ring tone is deactivated and there is no visual indication.

The call will appear in the call list when it is finished.

Please follow the steps below:

  • Go to the “Settings” (Einstellungen) via the gear icon (top right of the application) and then go to “Audio”.
  • Scroll all the way down and click on “Advanced” (Erweitert).
  • Select the preferred audio device in the selection box and set the device to the top position using the arrow buttons below the box.

Instruction with pictures (opens in new tab)

For phone calls out of the TU you have to pre-dial a leading 0, from cell phones only if you use the Jabber app.

To avoid problems you should generally use the international notation for the phone numbers in your contacts on the smartphone and the PC, so for German phone numbers: +49 <area code without 0> <phone number> (for example: +49 6151 1612345). This way all telephony applications behave correctly.

The registration of the Jabber client in the UC portal is tied to the specific end device with which the registration was performed.

This means that in the event of a device change (new cell phone, new laptop or similar), you must delete the registration of the old device's Jabber client in the UC portal and re-register the Jabber client of the new device.

UC portal: https://csm.net.hrz.tu-darmstadt.de/ciscouc/

Many Internet providers use a FritzBox as a router for their network. Especially with rented boxes, the provider may activate various security mechanisms in the FritzBox settings. Among other things, IP telephony from the home network can be prevented. In this case, the Jabber client cannot connect to the TU Darmstadt telephone server.

To resolve the problem, log in to the user interface of your Fritzbox.In the settings, navigate to:

Telephony -> Own number -> Tab: “Connection settings” -> Security

The item “Prevent use of Internet telephony from the home network” must NOT be checked here.

General for Alcatel and Cisco

If your phone is showing a black display and this does not change after rebooting, please contact us .

If the handset cord or the handset of your desk telephone is defective, please send us an e-mail to with the request for replacement.

You will then receive the replacement delivered or installed. There are no costs for this service.

The following connection types are offered:

  • Normal connection => digital system telephone depending on location and infrastructure
  • Analogue connection => for fax or in exceptional cases DECT telephone
  • Softphone Jabber => only available dedicated for the Cisco PBX

The selection of the telephone systems and terminals used is based on the location of the building. Unfortunately there is no possibility to choose the type of terminal and system.

Do you need a telephone or a new connection with a telephone number for your workplace? Then you are right with us.

You will find detailed information on this page .

A monthly basic fee is charged for a telephone. In addition, there are also call charges for telephone calls made. Details of these costs can be found in the billing section .

Internal calls are free of charge:

Telephone calls within the TU Darmstadt or within the system network (therefore also connected facilities in the same number range 06151 16 xxxxx)

External calls:

will be charged. You can find details of these costs in the billing section .

If you want / need to move your workplace, you will find the information and the corresponding form here .

Note: if a whole group or department is moving, these notifications are sent to us in a bundled form via a relocation coordinator.

If the name is changed, we can also apply this to the end device. Details can be found here.

Meaning of “Reserved telephone number”: It is possible to have one or more consecutive telephone numbers preregistered so that they can be used for setting up new terminals at a later date.

The reservation of a phone number costs 1,- Euro per month at the expense of the cost centre. This is due to the fact that for a reserved call number a licence with costs must be held in stock.

New starting from mid of 2023:
We do not provide reserved telephone numbers any longer. Already served customers are free to use their contingent but new purchasing or increasing their amount of numbers is no longer possible.

For international calls, call charges are sometimes much higher. Therefore, the cost center manager has to approve international activations. For further information see also here .

A special authorisation is required for call forwarding to external (also known as external call forwarding). Costs may also be incurred in connection with this call forwarding. Therefore we cannot change this feature to call forwarding. We need a change request signed by the cost center owner or local admin.

You can find the form here

For voice recording, both Alcatel and Cisco have an independent mailbox system. The voice mailboxes per terminal device are not available by default, but must be created by the Network Operation group according to your order.

After this initialization you can change the settings for yourself. Costs for mailbox provision and administration are included in the basic fee.

All details about voicemail can be found here:

Voicemail Alcatel
Voicemail Cisco

Alcatel: Your mailbox can be accessed by pressing the key on the phone or by calling 1999.

Cisco: You can access your mailbox by pressing the key on the phone. This is located on the keypad, the key with the letter symbol.

If you forget your personal password for your mailbox, this must be reset by the HRZ technicians.

Please open a ticket for this purpose.

You can find the voicemail user guide here:

Voicemail Alcatel
Voicemail Cisco

Telephone connections can be provided at many locations for conferences and other events. Interested parties should contact the HRZ via web form or directly via the ticket system or by e-mail () to clarify whether connections can be provided at the venue. Call charges will be invoiced to the organisers.

You have the choice whether you want to display your phone number & name to the caller or not. If you wish, you can do this differently for each call.

The changeover takes place as follows:

select the key combination “*19” and then the phone number of your call partner. With this procedure you can switch the numerical display on and off.

Tip: on Alcatel terminals this function is also offered when starting to dial. To do this, press the button for “Geheim deak./akt.” on the right side of the display after lifting the handset. Depending on the activation or deactivation the abbreviation “deak.” or “akt.” is displayed.

It is also possible to assign a key permanently to the function.

Note: if the display suppression is active, no phone numbers/names are shown to the partner even during incoming calls.

Meaning: (Situation: second call is activated)
A call comes in during an ongoing call. The called party now receives a so-called “call waiting tone” signalled. Now the informed subscriber has the possibility to accept the second call. To do so, he or she must end the first call or put it on hold via consultation. The second connection is then established automatically.

What does this look like to a caller?
If “Call waiting is allowed” (second call = “ON”), the caller receives a ringing tone.
If “Call Waiting Not Allowed” (second call = “OFF”), the caller is signalled “Busy”.

Can I switch between the two variants?
Yes, this function is active by default (second call = “ON”) and can be deactivated individually.

  • Alcatel participants:
    during a call this can be changed by pressing a key (shown in the display). However, the change will only take effect from the next call.
  • Cisco participants:
    the changeover takes place statically in the system. If you wish to change the second call “ON” <=> “OFF”, please contact us by ticket.

In addition to the simple “picking up the handset and starting to dial”, there are various options for recording dialing.

Details of the handling and effect are explained in this document: Block Dialling (opens in new tab)

MFV stands for multi-frequency dialling. Here, a specific tone is generated by pressing a number key, which is transmitted to the call partner for signalling (tone dialling).

Postdialling means that in an existing connection this tone dialling is used to control telephone conferences, information services, answering machines, etc.

Activate MFV postdialling:

  • Alcatel: in the call state, the display shows “Send MFV”. To activate, simply press the key next to it. Alternatively the activation can be activated with the key sequence '*' and '0' as a feature.
  • Cisco: in the call state, each use of the key is automatically transmitted to the other party as a MFV signal.

You can find further information on this pages:

Alcatel equipment
Cisco equipment

For details, refer to
Alcatel equipment
Cisco equipment

The first point of contact in this case would be your IT administrator or the local cost centre manager you can contact. If he/she does not have any information about the telephones and telephone numbers, you can look them up in the TU Darmstadt telephone directory.

We provide an analogue TC connection or an IP port for the connection of an analogue or digital bell system. We do not offer any service regarding commissioning and maintenance of the system. This must be arranged by the operator of the doorbell system. If you are planning to use such a system, please contact us using the web form.

Especially for Alcatel terminals

If there is any noise, interruptions or chopped off words during a call or during call setup, the fault is probably due to a defective handset or handset cord.

In such a case, please contact us via fault message or ticket. See the contact bar on the right.

There is the classic 3-person conference and another variant allows for a maximum of a 29-person conference.

Details on conferences are described in the operating instructions for the respective terminal. This link will take you there.

Note: the inviting caller bears the costs.

In general, no UC functionalities can be used for Alcatel terminals. However, the Jabber Client could be installed and used on the computer. If you have any questions about this you should contact us by ticke t.

Especially for Cisco devices and applications

This could indicate a temporary weakness in the network, but possibly also a defect in the end device (e.g. receiver cord).

You can report this to us as a fault and we will take care of the troubleshooting. Please use the link to the web form provided in the contact column on the right.

The procedure is as follows:
You start with an existing call.
Press the Conference key and perform the following steps:

  • Enter the phone number of the participant(s) you want to add and press the Call softkey.
  • Wait for the party to answer the call (or continue to the next step in the meantime).
  • Press the Conference key or the Conference softkey. The conference starts.

Repeat these steps if you want to add more participants to the conference.


– If a participant (including the conference starter) switches off, the other participants remain in the conference call.

– The inviting caller bears the costs.

Error messages

You should withdraw your agreement to the DFN-AAI in the IDM portal once and renew it again. You can give your consent to the transfer of data to DFN in the identity management of the TU Darmstadt in your personal account under the menu item Zustimmungen" (in the left menu): https://www.idm.tu-darmstadt.de/idmPortal.

TU-GitLab requires the consent of the data transfer in DFN-AAI. Authentication is carried out via the Shibboleth service of DFN (German Research Network). You can give your consent to the transfer of data to DFN in the Identity Management of TU Darmstadt in your personal account under the menu item “Zustimmungen” (in the left menu): https://www.idm.tu-darmstadt.de/idmPortal.

Accounts that are not used for a longer period of time are automatically blocked and must be reactivated. Please contact us via our support form . If a project has not been used for 12 months, the user will be asked by e-mail whether the project is still needed. If there is no response within 8 weeks, the project will be deleted.


  • Employees – Everyone who has a contract of employment with TU Darmstadt and is registered in the SAP via Directorate [Dezernat] VII.
  • Students – All students who are registered regularly at TU Darmstadt and have a matriculation number.
  • Guest Students – Those who wish to participate in courses of TU Darmstadt without the usual requirements or a university entrance eligibility. More information.

Furthermore there are possibilities for groups of people with a legitimate interest in a TU-ID, who are not part of the groups mentioned above, to apply for a TU-ID for guests [Gast TU-ID] via the Staff of TU Darmstadt. For further information please view below under “Who is eligible to a TU-ID for guests?”.

With the TU-ID you can log in to many IT-Systems at TU Darmstadt. This way you only need a user ID (TU-ID) and the corresponding password. Furthermore you need a TU-ID to receive a Athena card.

You can find more information about TU-ID in our service catalogue .

If you do not regularly receive a TU-ID but have a legitimate interest in a TU-ID, you can apply for one via the application form of the HRZ-Service. The application may only be filed by a natural person, who is employed by TU Darmstadt. This person is then the contact person and is responsible for the TU-ID for guests.

Examples for groups of people with a legitimate interest:

  • External doctoral candidates who do research at the departments of TU Darmstadt
  • Student assistants of other universities, who work for a facility of TU Darmstadt
  • Research partners, visiting professors, emeriti
  • Members of Vereinigung von Freunden der Technischen Universität zu Darmstadt

HRZ-Service contact

Your TU-ID is public. You keep the password secret!

Emergency contact

The emergency contact is a personal email address other than the address received from TU Darmstadt. Alternatively you can use your mobile number. The emergency contact is used exclusively for recovering the password.

The emergency contact can be set in the IDM-Portal (user portal of the identity management), in the section “Notfallkontakt”: www.idm.tu-darmstadt.de/idmPortal

If you have forgotten your password and haven't set any emergency contact yet, the HRZ-Service counter staff can help you to specify an emergency contact on site. Please bring a photo ID.

Since this service can only be provided by the staff and not by the student assistants, please come in the core hours of the service desk (usually 8-16 o'clock), or check the HRZ-Hotline for available staff.

Opening hours of the HRZ service counters

Access to the TU-ID, Forgotten Password

If you have set an emergency contact in your TU-ID account (a private mail address or mobile number), you can set a new password on this page: https://www.idm.tu-darmstadt.de/passwordRecovery. Please follow the instructions given there. For further questions please contact the HRZ service.

If you should forget your password without having set an emergency contact, the staff at the HRZ service counters can help you set an emergency contact on site.

Please bring along photo identification.

Since this service can only be provided by the staff and not by student assistants, please come during the core times of the service counters (usually 8-16 o'clock), or check the HRZ-Hotline if any staff is present.

The opening hours can be found on our homepage under www.hrz.tu-darmstadt.de/service

Passwords not changed since 02/14 do not comply with our new password policy.

The following actions are recommended: Check in the IDM portal under “Emergency contact” whether you have stored an emergency contact in your account in the form of a private e-mail address or a mobile phone number.

If a valid emergency contact is available, please use the password reset function to set a new password. The password recovery function can be found here:


This procedure is only required once. Afterwards you can set your password in the usual way over “Passwort setzen” in the user portal.

Everyone who has set a password after March 2014 can ignore this, as your password is compliant with the newest password policies.

You receive an activation code, with which you can start the activation process under this link: http://www.idm.tu-darmstadt.de/activation. Furthermore the following personal information will be asked of you:

  • Students – You require the activation code, your matriculation number and your date of birth
  • Guest students – You require the activation code, your guest student number and your date of birth.
  • Employees – Your require the activation code, your staff registration code and your date of birth.
  • Guests (TU-ID for guests) – Your require the activation code, the activation number and your date of birth.

The activation code is sent to you via post, as soon as the TU-ID is registered in the system. This may happen through different ways:

  • Students in the first semester – You receive your activation code with your matriculation letter [Immatrikulationsschreiben] or your study data sheet [Studiendatenbogen].
  • Guest students – you recieve your activation code in the confirmation letter upon your application for guest students.
  • New employees – You receive a personal letter with the activation code to your organisational unit via internal post. Please ask at your new place of employment about mail for you as soon as possible.
  • Guests (TU-ID for guests) – The letter with the activation code is sent to the person who has applied for the TU-ID for guests for you via internal mail.

If your activation code is no longer accessible and the TU-ID is still inactive, you can receive help from the HRZ service.

You will receive help on site, if you come to our service counters with a photo identification. As soon as you have identified yourself, our staff will help you with the activation process.

For employees we can alternatively send the activation code to the organisation unit set in the system via internal mail.

  • Studierende – Three months after the de-registration.
  • Employees – Four weeks after the end of the contract.
  • Guests (TU-ID for guests) – Up to the expiration date stated in the application.

No, this is not intended. You are assigned a TU-ID in the format xx12abab.

If you enter the wrong password several times in a row, your TU-ID will be blocked for several minutes. This way we can stop third parties from abusing your account by trial and error. If you are sure you still know your password, please wait a few minutes and try again. Should you not know your password anymore please reset it via your emergency contact. (see above: “I have forgotten my password. How can I reset it?”).

We recommend to set a secure password which you can easily remember. You can find further tips here.

This can happen if you have a password shorter than nine characters. Set a new password via the emergency contact that is compliant with the password policies or, in case of no valid emergency contact, seek out the HRZ service counter.

In case this does not help, please write the HRZ service a ticket with your TU-ID in it.

This problem occurs in case the “Connectivity Checking” option is activated under “Settings -> Privacy -> Connectivity”. Deactivating this option solves the problem.

The tests were done by using Ubuntu 22.04.4 and the Cisco Secure Client

An alternative client is OpenConnect (http://www.infradead.org/openconnect). According packages are offered for conventional Linux distributions. Ports for Windows and MacOS X are also available. Linux allows you to enable a connection with “sudo openconnect https://vpn.hrz.tu-darmstadt.de”. You can also use NetworkManager's GUI.

Unfortunately, we are not able to provide support for this software.

However, the HRZ's user support service provides assistance during installation. At their location you will find a computer that is equipped with several virtual distributions for demonstration purposes.

Passwords should only consist of letters from ( a-z , A-Z ), numbers and the following special characters:“ $ % & ‘ ( ) * + , – . / : ; < = > ? @ [ \ ] _ { }. Passwords should not contain an umlaut: ( ä ö ü Ä Ö Ü ). The reason for this is that several operating systems are not able to process these correctly. In this case passwords are recognized as incorrect.

  • Terminated installation
    • Error message: “VPN client agent was unable to create the interprocess communication depot”
    • Reason: It is possible that settings regarding the joint usage of Internet connections are causing problems concerning the network interfaces.
    • Solution: deactivate this feature.
    • 1. “Start --> control panel --> network and Internet --> network and sharing center”
    • 2. “Change adapter settings”
    • 3. Select an adapter by right clicking it.
    • 4. Make sure to remove the setting that allows other users to use this computer connection for Internet access in terms Internet connection sharing.
    • 5. Confirm these changes and click “OK”.
    • 6. Complete this entire process for all further adapters you are using.

SMTP port (Port 25) is blocked for TU Darmstadt's entire network since the 25th of September, 2007. This entails that emails can no longer be sent beyond TU's network directly. Mail gateways need to be used instead.

You can log in via WiFi by using TUDWeb. However,eduroam is not going to work in this situation. Please set up a new password and pay attention to upper and lower case letters.

password manager

This message means that Cisco AnyConnect VPN service is currently not running. This could be caused by Windows boot accelerator software. These modifications might influence the rebooting process of Windows services in a ways that are no longer supported.

For example, such problems were caused by Lenovo Rapid Boot. Please uninstall this kind of software to solve the problem at hand.

AnyConnect Client verifies the certificates of remote stations. If you are only receiving a notification regarding this error while being at certain locations (e.g. hotels, hotspots etc.), then network access is terminating your SSL connection. This situation does not provide secure transmission, which is why you should proceed by using a different source for Internet access.

In case you are receiving notifications concerning this error regardless of what kind of Internet access you are using, please make sure that Telekom's certificates are installed on your device. Also, check whether you entered “vpn.hrz.tu-darmstadt.de” correctly.

If you are still experiencing problems after trying to problem solve as explained in the preceding steps, please use AnyConnect Secure Mobility Client's tool for troubleshooting.

In order to generate the document that needs to be send for system diagnosis, please do as follows.

1. Open Cisco AnyConnect Secure Mobility Client.

2. "Start -> all programmes -> Cisco -> Cisco AnyConnect Secure Mobility Client -> Cisco AnyConnect Diagnostics and Reporting Tool

3. Do not change any of the default setting and proceed

4. In order to generate and send the document, you need to chose the email package or send the document by using your preferred email programme. You may also use the inbox: netzbetrieb@hrz.tu-darmstadt.de.

Since 2015's February Patchday it is possible that a connection may cause an error message that notifies you of a failed connection system or subsystem initialisation.

This problem can be avoided by activating a compatibility mode for the programme “vpnui.exe”. The according method is described here. Microsoft and Cisco are working on fixing this problem.

Meanwhile Microsoft has issued a FixIt for KB3023607.

Before upgrading you should be sure to switch to AnyConnects current version. Connect to VPN gateway and execute the according update.

If there are any further problems after this update, please uninstall AnyConnect Client completely.

All questions and answers about the vDesk service can be found in this FAQ .

Installation settings / extensions

The V-Server is provided including network, firewall configuration and other relevant system settings and is in a current patch state.


  • A new V-Server is cloned from a template for each operating system version. During this process, the server name is automatically adopted and a new SID for the server is generated using the Microsoft tool sysprep.


  • A V-Server is created fully automatically with the help of a so-called “unattended installation”.


  • The installation is carried out in a single partition C: ; additionally, there is a partition reserved for the system.
  • The server license is activated automatically via the KMS server of HRZ.
  • The basic installation of the server is in English language.
  • The IPv6 network stack is completely deactivated via a registry entry.
  • There are no tools for display changes like classic Shell installed.
  • Additional software will not be installed.
  • Root V-servers will not be added to the domain of the HRZ.
  • The server name is determined by the group System Operation according to a naming scheme.


  • The software equipment corresponds to a minimum installation of the respective distribution.
  • The basic installation of the server is in English.
  • /boot lies in a separate partition. The root file system and the swap area are located in an LVM.
  • The IPv6 network stack is completely disabled by a boot parameter.
  • The classic naming scheme of the network cards (“eth0”) is kept despite system. This is implemented with the help of an appropriate boot parameter.
  • As soon as the hardware extension is completed in the virtualization environment, it can be used directly in the operating system.
  • CPU, RAM and hard disk expansion can be carried out in consultation with the customer. System times and effects depend on the respective server configuration.

Network and Firewall

The subnet/IP address for the server is specified by the HRZ or must be available in the central server room.

  • The local firewall is active by default and blocks all ports not explicitly released.
  • Remote access is restricted to the TU network and is
    • for Windows via RDP
    • and for Linux via SSH.
  • The regulations of the Bordergateway Firewall of the TU Darmstadt are also valid for this server.
  • The customer is responsible for the local firewall rules after handing over the server.
  • The System Operation group registers the server with a predefined name (FQDN) in the central network management. The customer can register additional alias entries in his own domains.
  • The registration is done with the option of activated Internet access.
  • The server can be configured in a dual stack mode. In this case it receives an IPv4 address and an IPv6 address in parallel.
  • The operation of IPv6 is done according to the network specifications.
  • For the IPv6 address, the procedure is the same as for IPv4 login.

Access to the server / monitoring


The Microsoft Server can be reached via the Remote Desktop Service. A suitable client exists for all common operating systems. The Windows operating system comes with the tool mstsc pre-installed.


Remote access to Linux servers is via SSH. For Windows users, the software package “Putty” exists which provides this functionality.


  • A purely administrative exchange can be realized via a compatible RDP client. The data is inserted by copy and paste and “looped through” via the local network connection.
  • The protocols SMB or CIFS can be used for data exchange.


  • The protocols SMB or CIFS can be used for data exchange.

In case of problems or questions you can open a support ticket at any time. The server will then be restarted as soon as possible.


The administrative Remote Desktop is limited to two simultaneous RDP connections. This is the free standard from Microsoft. If you want to establish more than two simultaneous connections to the server, the server must be operated as a terminal server. This requires additional paid licenses from Microsoft.


You can open almost any number of SSH sessions simultaneously.

User accounts and management



Update and system times


  • When the server is delivered, it is in a current state. All patches available via Windows Update have been installed.
    • An exception to this is the Malicious Software Removal Tool. This is not updated.
  • The settings for Windows Update are preconfigured as follows:
      • Install updates automatically
      • no “recommended updates”
      • Give me updates for other Microsoft products when I update Windows


  • When the server is delivered, it is in a current state. All available patches have been installed.
  • Automatic updates are activated. If necessary, the system will be rebooted automatically.

Service agreement

The term is 12 months and is automatically extended by 12 months thereafter.

No, the agreement is automatically extended for another 12 months.

To the next 1st of a month, after the provision.

The invoice is debited internally via the cost centers.

  • The debit begins with the term of the agreement, annually in advance.
  • The HRZ reserves the right to change the debit run to quarterly or monthly billing.

The agreement can be concluded with a notice period of three months to the end of the term.

The settlement is adjusted on the next 1st of each month and settled or invoiced in the next debit run.

As the responsible person, you can informally terminate the agreement at the next possible date. To do so, use the contact form on the V-Server web pages.

Other questions

The free campus version of Sophos can be installed on the server.

Additional software can be installed independently. The customer is responsible for any required licenses and for safe operation.

  • The Windows Server version is licensed through the System Operation group.
  • A Microsoft Server access license is included for all employees of the TU Darmstadt. (Client Access License, CAL)
  • All other licenses must be kept available by the customer. This includes the licenses for Office, SQL, TerminalService, ExchangeCAL, SharepointCAL etc.
  • Some software products require special licensing on virtual environment. If you need more detailed information, we will provide it on request.

The HRZ's central information channels – newsletter and website – also provide information on news and disruptions.

In case of problems or questions you can open a support ticket at any time.

Zoom & Privacy Policy

Zoom – Privacy Policy, Information on data protection: Privacy policy (opens in new tab)

Information of the data protection team of TU Darmstadt from 05/05/2020 about the Using Zoom at Technical University of Darmstadt (EN) (opens in new tab) .

The Heise ticker and other media have recently reported on older security flaws and outdated default configurations of the zoom system.

The collection of anonymous data usage from a Facebook service, which is still in the iOS app, will disappear with an update of the iOS app.

Reports on configuration options that were generated by default meetings without a password are long outdated. Today, meeting IDs are not so easy to guess, and meetings are created by default with a password.

An assessment by a specialist lawyer for IT law, says: “For me, ”Zoom“ is currently the best mix of quality, scope of services, price and also data protection friendliness. This may sound strange for a US provider. But for me it is.”
Read the full article here: https://www.datenschutz-guru.de/datenschutzhinweise-zoom/

Zoom configuration at TU Darmstadt

  • To participate in a meeting via telephone, you need a password by default.
  • Authentication via Google and Facebook is disabled.
  • The integration of other calendars into the zoom desktop client has currently been switched off because it does not make sense to store passwords or rights to connect to the groupware service of the HRZ in the Zoom.
  • The integration of Zoom into Outlook is done by an add-in/plug-in that works in connection with the local Zoom client. Registration to the Zoom system is done exclusively via Zoom client.
    Important: The Outlook plug-in enters the link to the meeting generated by Zoom-System into the “Location” field in the appointment. If you have made the field “Location” visible to other people in your groupware calendar, these people also have access to this link and could participate in the meeting via this link.

Further recommendations to avoid the unwanted use of tracking services (Google Analytics etc.) on the zoom websites:

  • Please use the Zoom desktop application and not the Zoom website to start or join meetings.
  • Please do not invite to Zoom meetings via the invitation link generated by Zoom. Instead, please tell the participants the meeting ID and the meeting password. In the desktop application you can enter the ID and password to start or join a meeting.

It is strongly recommended that you always set a password for your meetings so that no unauthorized persons can access your meetings.

Make absolutely sure that the assignment of a password is enabled by checking the box under “Password > Meeting password is required”.

Never put your password in the subject or location of your meeting invitation and keep it, like any other password, completely confidential.

Recommendations for using Zoom

The following points/considerations are helpful for a smooth running of your meetings with Zoom:

  • If required, short communication/explanation of communication procedures/function (Raise-Hand, Chat, Polling)
  • Mute the participants when entering the meeting
  • Using Waiting Rooms
  • Division of meetings into several separate sessions – Breakout rooms
    (The campus license allows a meeting to be split into up to 100 breakout rooms)
  • Record meetings only after approval of all participants!

The e-learning working group of the TU Darmstadt also provides detailed information and recommendations for the use of Zoom in teaching. The functionalities are described, for which scenarios they are usefully applicable and which corresponding settings should be made in Zoom.

Additional information

Zoom offers the following possibilities to delegate accounts and meetings:

Especially for larger meetings, it can be useful to have a Co-Host to support the meeting. For example, the Co-Host's task is to manage the list of speakers, the participants' microphones, etc. Co-Hosts can also push participants into a waiting room and bring them back. However, some functions can only be used and controlled by the host.


Pass Host
If a host has to leave a meeting, he can transfer his host role to another meeting participant. This can also be a participant with a free Basic license.


Alternative host
If a host is unable to host/start a meeting because he is prevented from doing so, he can transfer his meeting in advance to another person who will assume the host role for him.
It can be assumed that the other person will also need a paid license, as a free basic license is probably not sufficient.


Scheduling privilege
If the need for regular representation of another person is foreseeable, the respective persons can grant each other certain rights, such as creating and hosting a meeting. This automatically includes the “Alternative Host” function.
All persons representing themselves require a paid license for this.


The transmission of screens and controls is done with the encryption of Zoom. According to all that is currently known, the connections from client to client are made via their server (except 1:1 sessions). The usual Transport Layer Security (TLS encryption) is used for secure data transmission.

Information about the default screen sharing settings: