CTD - Installation Manager on Startup - (Repeatable No Error Code)

I installed everything properly but everytime i start FS2020 it runs the installation manager. After checking for updates it loads the Setup like “What Graphic Settings” Keyboard/Mouse Settings etc. so it reset everything. It seems that FS2020 doesnt have any right to write in the installation path C:\Users\Nobody\AppData\Local\Packages

Does anyone know how to fix that?