If you have received an expulsion decision and a prohibition against entry to Norway, you can submit an appeal. UDI will then reconsider your case.
If you have been expelled from Norway for a period of two or five years, and you have children in Norway with Norwegian citizenship, residence permit or right of residence according to the EU/EEA regulations, you can apply for family immigration within six months of the date when the prohibition against entry expires. You must fulfil the requirements for a new residence permit, except for the requirement of not being subject to a prohibition against entry, at the time UDI makes a decision in the case of family immigration. Although a new permit can be granted before the prohibition against entry expires, you cannot travel to Norway and other Schengen countries until after the prohibition against entry has expired.