Foreigners who have held a Norwegian passport
Suppose you previously had a Norwegian passport, and you believed that you were a Norwegian citizen. In that case, you can have your residence time calculated for the period you have lived in Norway, even if you have not had a residence permit. You may also be granted an exemption from the permanent residence permit requirement.
If there are other significant reasons about your situation why there should be made exceptions from other requirements that apply to obtaining Norwegian citizenship, this may also be considered. It may, for instance, be possible to become exempt from the requirement to be or have been resident in Norway.
You must submit a copy of the Norwegian passport you have been issued, even if you were not a Norwegian. You do not have to pay a fee if you are in this group of applicants.