Launch from the correct icon
- Relaunch Navisworks using the regular Navisworks shortcut (not the BIM 360 one).

If errors still occur, please refer to this article:
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Navisworks-error-You-do-not-have-suitable-BIM360-authorization-to-use-this-product.html