Welcome to the RBG-Helpdesk!

What kind of assistance do we offer?

The Rechnerbetriebsgruppe (RBG) maintaines the infrastructure of the Faculties of Computer Science and Mathematics and provides IT-Support for them. The Helpdesk is the first point of contact for questions to the RBG.

Mainly the helpdesk is responsible for problems with the hard- and software of the RBG, which includes
  • the workspaces in the Rechnerhalle
  • the workspaces in the offices
  • the Xerox-Printers
  • WLAN-problems within the Uni-Network
  • VPN-Connection to the TUM
  • set up of the RBG certificate
Furthermore the helpdesk maintains two websites. The Wiki wiki.in.tum.de and the Knowledge Database kb.in.tum.de which are continuously updated. Many answers for common questions can be found quickly in those articles.

On voluntary basis, and depending on our work amount, we try to answer other questions regarding private systems, to provide a good study and work environement for students and staff.

But we are not responsible for
  • viruses
  • hardware damage
  • data transfer
on private systems.

Questions regarding central IT-Services like TUMOnline are the responsibility of the IT-Support.


  • E-Mail: rbg@in.tum.de/rbg@ma.tum.de/rbg@cit.tum.de
  • Telephone: 089 289 18018
  • Our Location

Opening hours

Monday - Friday 08:00 - 18:00 Uhr.

1.Blackbox / Files

Everything that has to do with BlackBoxen and the filesystem.

1.1. Remote

1.1.1. Ssh Access

1.1.2. Ssh Login without password (SSH Key set up)

1.1.3. Data transfer between Rechnerhalle and a private Computer (Certificate, Pictures etc.)

1.1.4. Run programms so they don't terminate at the logout

1.1.5. Remote Desktop Access

1.1.6. RStudio Server

1.2. On site

1.2.1. Log in to the computers

1.2.2. Re-install programms

1.2.3. Restoration of deleted data

1.2.4. Change access rights for your home directory

1.2.5. Teamviewer installieren

2. Account

2.1. RBG (in.tum/ma.tum/cit.tum)

Information on hosting and overview your RBG account.

2.1.1. Account Information (Student/Coworker/Guest)

2.1.2. Change password of the RBG-Credentials

2.1.3. Find out password of the RBG-Credentials

2.1.4. Reset passwort of RBG-Credentials yourself / Activate the RBG Account

2.1.5. Reset password of the RBG-Credentials

2.1.6. Change access rights for your home directory

2.1.7. Create an own website

2.1.8. My name has changed. Can i change my RBG-Credentials?

2.1.9. Account after Exmatrikulation / End of Service/ End of Study

2.1.10. Request of in.tum/ma.tum/cit.tum Credentials for Non-Informatics / Non-Mathematics

2.2. TUM-Online (LRZ- Credentials)

2.2.1. Apply for LRZ-Login for guests and external student assistants

2.2.2. Personal Identification Number (PIN) for TUMonline

2.2.3. Reset Password for LRZ-Credentials

2.2.4. TUM account after Exmatriculation/ End of Employment/ End of Study

3. E-Mail

3.1 RBG (in.tum/ma.tum/cit.tum)

All informations about hosting and set up of RBG mail addresses.

3.1.1. How do i set up my RBG e-mail account?

3.1.2. Self Service Portal: Forwarding, Vacation Message, other e-mail settings

3.1.3. Change of mail server settings due to mail server sender restrictions

3.1.4. How do I set up the LDAP address book?

3.1.5. Shared folder in the CIT domain

3.1.6. Shared Folder (gemeinsames Postfach)(Informatik)

3.1.7. Function Address (Mathematik)

3.1.8. RBG e-mail account after exmatriculation/ end of employment/ end of study

3.1.9.Save the message as an .eml file

3.2. TUM (LRZ)

3.2.1. How to set up an e-mail account?

3.2.2. TUM Exchange

3.2.3. TUM e-mail account after exmatriculation/ end of employment/ end of study

3.2.4. Shared Mailbox at the TUM

4. Certificates

4.1. General Informations about the certificates and encryption

4.2. Certificate request, download

4.3. Group certificate request, download

4.4. RBG Certificate set up, extend

4.5. Export TUM/RBG certificate

4.6. Set up Ldap server on your own Computer

4.7. Set up TUM/RBG certificate on a mobile device

4.8. Digital signature with certificate

4.9. Validation of digital signature

5. Printing

All Information about the Xerox Printers.

5. General Information about the Xerox Printers

5.1. Printing for Students

5.1.1. Printing in the Rechnerhalle with FollowMe

5.2.2. Print from the web on Qpilot

5.1.3. Printing Thesis, Seminar, etc

5.1.4. Scan to USB-Stick with the XEROX Work Centre 7835

5.2. Printing for Employees (Followme/Ucentral/Directprint)

5.2.1. FollowMe: Driverinstallation and set up

5.2.2. Print from the web on Qpilot

5.2.3. Xerox-Printer Card registration

5.2.4. Collect your prints from Xerox Work Centre 7835

5.2.5. Copy with XEROX Work Centre 7835

5.2.6. Print from USB-Stick with XEROX Work Centre 7835

5.2.7. Scan to USB-Stick with XEROX Work Centre 7835

5.2.8. Xerox - Printer locations

6. Ordering Software

All information about ordering Software within the master contracts (Matlab, Microsoft, uws.).

6.1. Matlab

6.1.1. Matlab Rights overview

6.1.2. Ordering Matlab, License etc. (Students/Employees)

6.1.3. Ordering Matlab, License etc.(Guests)

6.2. Studisoft (www.studisoft.de)

6.2.1. Rights overview (Office Professional (Office 365)/Microsoft Imagine/Think-cell/Ms Campus

6.2.2. Iso Files / Burn images on DVD

6.3. Microsoft Azure Dev Tools for Teaching (Students / Employees)

6.3.1. 'Microsoft Azure Dev Tools for Teaching' replaces Microsoft Imagine

6.3.2. Instructions for microsoft azure portal products

6.4. MS Campus EES (Employees)

6.4.1. General informations for MS Campus EES (Kms)

6.4.2. Instructions for MS Campus EES products (Office und Windows)

6.4.3. Activate Telnet with Windows 7 and Windows 10

6.5. Office Professional (Office 365) (Students)

6.5.1. General informations for Office365

6.5.2. Instructions for Office 365

6.6. Other software products

6.6.1. Origin

6.6.2. Thinkcell

7. Network / Internet

All information about Network connections and Internet within the FMI Building.

7.1. Wlan

7.1.1. WLAN (Eduroam)

7.1.2. eduVPN

7.1.3. VPN Chair (Employees only)


7.2.1. Using LAN-Cabel in the Rechnerhalle/FMI-Study rooms

7.2.2. Informatics Proxy

7.2.3. Request an IP Address (Employees ONLY) (Contact your Struktur-DB - administrator)

8. Other

8.1. Set up Matrix Chat

8.2. Big Blue Button

8.3. Instructions for the RBG order form (only for employees of the faculties of Informatics and Mathematics)

8.4. Change the Samba-password (Access on User directory via Wiondows)

8.5. Sieve rules for the e-mail-filtering

8.6. Time Machine Backup

8.7. Linux Borg Backup

9. Frequently asked questions

Instructions on how to fix common errors and problems.

9.1. Thunderbird/ Firefox doesn't start anymore

9.2. BlackBox login screen stops sesssion

10. Security

Instructions on how to fix malware problems

10.1. Ransomware: WannaCry

10.2. Windows Updates

Topic revision: r298 - 16 May 2023, AyseguelOmusNe63guq
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