This means that your enrollment number is not in our system. See next paragraph.

This is usually the case when you were not yet enrolled while we got the list of the students. Please send us a verifiable enrollment certificate (PDF) via e-mail. You can create that yourself quickly on Studienservice. (Login there, click „Notifications“ → „Studienbescheinigung (auch für BaFöG)“)

RWTH Students (B-IT Media Informatics students): please send us your RWTH enrollment certificate instead (download in RWTHonline → Documents; after enrollment at RWTH).

The CS or b-it identifier must be extended by 30 November of each year. The extension period is the beginning of the winter semester until the 30th of November of the same year. Please renew your account within the regular extension periods!

If it was not possible for you to renew your account in due time:

If you have a Uni-Bonn Uni-ID (most of you!), you can re-enable your account from the renewal page on startup. Follow the link forgotten or expired?. This is the fastest way!

All others (guest auditors and similar) please send us an e-mail with your eletronic enrollment certificate. This procedure also applies to students who forgot to extend their accounts at the beginning of the semester.

Please use the password reset page.

Please use the password reset page (2nd option). If you still remember the password, you don't need to actually change the password after you've been reminded of the login name.

Please send us an e-mail with your eletronic enrollment certificate from your Uni-ID e-mail. If all fits, we'll change your registered E-mail address to your Uni-ID.

For a renewal request, simply download a new one from the application server. For a new account, send us an electronic enrollment certificate as e-mail.

To construct a password for a computer science / b-it identifier, the following criteria must be met:

• The password must contain a minimal of 12 characters.
• The password must contain at most 127 characters.
• The first 8 characters must contain:
  1. Latin uppercase letters : A, B, C, … Z
  2. Latin lowercase letters : a, b, c, … z
  3. Arabic numbers : 0, 1, 2, … 9
  4. not alphanumeric characters : #?~:;,.{}()/_=%+-
• The password must not be part of your login name or your correct name.
• The character categories should appear mixed (not as in „1Hello2“).
• Ingredients should not be found in a dictionary or dictionary.
• Only characters from the above character category are allowed (1-4).

A little tip: think of a word and modify it: Example: Bleistift (engl. Pencil) → B1ejsT.ft („k“ becomes „1“, „i“ becomes „j“ and „.“)

A cs-account and an informatics-account is the same.

There are no account terminals anymore. Please use our online account creation system.