You can do this on StudentWeb
Deadlines for registering for the semester are:
1 September for the autumn semester
1 February for the spring semester
If you have not registered for the semester by the deadline, you will not be able to sit any exams and you will lose your entitlement to study.
The educational institution will only send confirmation to the Norwegian State Educational Loan Fund (LĂ„nekassen) when you have paid your semester fee and registered for the semester, and only then will you be paid any loan or grant. It is therefore in your own interest to do this as quickly as possible.