(Solved) Nuendo 13.0.50 freeze at start-up

Hi all,
Nuendo 13.0.50. Windows 11 latest updates.
Nuendo freeze at start up for a few days now.
Made a clean windows reinstall and installed only Steinberg products.
Problem is still there. No hardware changes.
I only can close Nuendo by using task manager, windows does not freeze.
Also I can’t find any crashdump. Ideas?
Thanks in advance and regards,
Twan

I think I solved the problem, corrupt file.
Copied al tracks in a new project and that works.