P3DV4 Crash on launch, ucrtbase.dll

Hello guys,

my sim used to run flawlessly, but every time I try to start the application it immediately crashes.

If I change addons it still generates new scenery file indexes, but then crashes immediately.

I am using Windows 10 and addons like ORBX and PMDG.

The following event can be found in the event viewer:

Name der fehlerhaften Anwendung: Prepar3D.exe, Version: 4.0.28.21686, Zeitstempel: 0x594a7255
Name des fehlerhaften Moduls: ucrtbase.dll, Version: 10.0.14393.1715, Zeitstempel: 0x59b0d045
Ausnahmecode: 0xc0000409
Fehleroffset: 0x000000000006d598
ID des fehlerhaften Prozesses: 0xc98
Startzeit der fehlerhaften Anwendung: 0x01d33bd36d1a4f72
Pfad der fehlerhaften Anwendung: P:\Prepar3d\Prepar3D.exe
Pfad des fehlerhaften Moduls: C:\Windows\System32\ucrtbase.dll
Berichtskennung: 744a67ce-8144-4648-9f54-6c9f2fe1e8e9
Vollständiger Name des fehlerhaften Pakets: 
Anwendungs-ID, die relativ zum fehlerhaften Paket ist: 

There are two changes I have made before the CTD appeared: I installed EDDM by taxi2gate and also made an Windows Update.

I already tried to uninstall and reinstall EDDM, and also tried uninstalling the recent Windows updates, since there are currently issues of which I found out in the Prepar3d forums.

I also deleted the config.

 I even set my Windows partition back to the time before the error occured with a backup, but nothing has helped, unfortunately.

Any help or suggestions would be very appreciated.

Thanks in advance!

Zebu