If one for example before his final work is, and has thus reached the last semester of his studies, you can let exmatriculate and submit the appropriate final thesis with the professor then, if this has been completed, or if a specific date was agreed to give, then to this deadline. One must therefore not enrolled to be able to submit his thesis, and thus to finish his studies. This rule does not apply to oral and written tests that can be put at the end of his studies, since one with a student ID no longer has de-registration and therefore can not participate in the audits. One can but be aware also deregister if eg has suffered a blow and do not know when to resume the student life. Or if you think about it, to study at another university, or in another city, then let one must first deregister from his old university before you can enroll at the new university. If you do not pay on time its outstanding tuition fees, one must also so right that it is expelled will, as it has Hochschulgesetzt violation of the German and thus a de-registration is legally legitimate. Should a student be expelled again, this is irrevocable for that semester and can be again until next term, to undo the payment of tuition fees.

There are also many cases so you can be expelled from the university administration. If one for example failed required academic credits, such as not the successful participation in two introductory seminars to provide, and this in a period of time can show, the student can be expelled. This will be a violation of the study in order, as stipulated in this, which benefits the student has to be provided, evaluated and the student is excluded from the further continuation of studies by the Enforced deregistration. The de-registration may occur even if the student has indeed met all the required services, but for example the application for its examination (audit, pre-diploma) missed and this is not about two full semesters does better. One might think that such cases occur rarely, but since one of the tests logs when you know that you could do this. But the reality is that a student rarely browsed the section of the examination and that the owner is caught mostly in student life, between lectures and submit homework. Then most people think that just because one has already spoken to the professor and the study provided benefits but were ok, nothing could happen to you. But in many cases, then not at all expected by registered letter is that it has now been de-registered because they did not meet certain requirements.