Nico
Please go to the windows terminal (admin) > type in : sfc /scannow > then wait until finished.
Press the “Windows+R” key, enter “SERVICES.MSC” and press enter. Find “Windows Update” in the service list, right-click on it and select “Restart”.
Please right click the windows —setting -troubleshooting —other toubleshooters— Windows update—run , let the PC diagnose the problem and solve it automatically.