Account: Change of Password

Please note: Some of the links below lead to pages in German, as work on the English version is still in progress. We apologize for the inconvenience.

You can change the password of your university account at the user account self management site. The change will be made via an encrypted connection to the server at the Data Center. Alternatively the change may be made at computer terminals in the Data Center.

→ Change or reset password (a switch to English is available in the upper right corner of that site)


In order to enable login, your password must fulfill the following requirements:

  • Characters of three (out of four) potential classes of characters must be used. Here are the four potential classes of characters:
    Upper case letters, lower case letters, digits, special characters (some restrictions apply, please see the hints below).
  • The password must have at least 9 characters.
  • It must be new, which means: you cannot use old passwords again that you have used before. Words that can be found in a dictionary should not be used.

If you would like to use your password for login to web sites (mail, downloads) or to Unix systems:

Avoid: *, §, ä, ö, ü, ß, Ä, Ö, Ü (these are characters with a decimal ASCII code of 32 to 126, see this → ASCII table).

General rules:

  • Your password must not contain your surname, first name, user name (account name) or parts of these.
  • §, ä, ö, ü, ß, Ä, Ö, Ü should be avoided because these characters are not available on all keyboards.
  • y, Y, z or Z should be avoided since these characters are to be found in different places, depending on whether you have an English or German keyboard. (This can cause problems if the computer/device is configured for a different keyboard layout.)
  • For security reasons we recommend a length of at least 15 characters for your password. However, this might cause problems with radius authentication (and WLAN authentication). If you encounter such problems, please turn to → our helpdesk.