You can lose your permanent right of residence
If you stay outside Norway for a continuous period of more than two years, you will lose your permanent right of residence. The same exemptions that apply to the calculation of absence when you apply for permanent right of residence also apply here.
In order to apply for permanent right of residence again, you must, as a rule, first have stayed in Norway for another continuous five-year period.
The UDI can also revoke your permanent residence certificate if you have given incorrect information to the immigration authorities or if you are rejected or expelled from Norway.