Due to a known critical Windows security gap, the printing service at the university was temporarily restricted for security reasons:
Printer sharing (inbound remote printing) is currently not available for printers on campus for at least one week. As soon as a corresponding security patch is available from Windows and has been imported, this service will be available again.
If you are facing printer problems, please restart your computer first. If this leads to severe restrictions for you in the next few days, please contact your IT administration.
For further Information:
Microsoft has given some explanations about the "Print Nightmare" exploit
The BSI also provides the following assessment