Re-enrolment is necessary each semester, here please find the deadlines:

https://www.uni-due.de/studierendensekretariat/rueckmeldungsfristen.php

On the occasion of the re-enrolment you pay the semester contribution.

You need to pay social contribution of  actually 302.40 € through bank transfer, details here:

https://www.uni-due.de/studierendensekretariat/sozial_studierendenschaftsbeitrag.shtml

For current information on deadlines, see also:

http://www.uni-due.de/zentralverwaltung/semestertermine.shtml or
A-Z function at the UDE website (www.uni-due.de/a_z/) link to “Semestertermine”

For re-enrolment after the deadlines a fee of currently 10 € is charged.

Contact details ZIM:

Campus Duisburg, LK (in the library on the ground floor)
Campus Essen, building R09 (in the library on the ground floor)
Opening hours: Monday – Friday: 9 a.m. – 7 p.m.