Suddenly no Simvibe output

I didn't change anything in the game and no SimVibe anymore since today, but the AF is working with Sim Commander. I tried nearly all to fix this, but no success and other games working fine:
-replaced the SC-Documents-folder with a backup that worked
-reinstall Sim Commander
-fresh rF2-profile
-fresh rF2 Userfolder
-rF2 exe instead of steam
-new SC 2 and 3 plugin
-replaced player.JSON file
-Steam integrity check
-certainly the usual like starting SC after the game runs etc.

Anybody any idea?

 

I would be checking soundcard options and drivers.
Also the plugin .dll file.

 

I did a fresh rF2 install on another drive, a fresh Sim Commander install and a fresh Realtek-driver install without change. I tried SC plugin 2, 3 and 4, Steam- and game-plugin. The only other information i have: Same problem with Automobilista. All other sims working.

 

Did Windows do any updates after the last time Simvibe worked with rF2?
My Simvibe worked fine last night.

 

Yes, but seems a minor update that i couldn't uninstall. I uninstalled the last combined update without a difference and disabled Windows Defender. The SimShaker Demo works, so it's SC-related i guess. Foundation FFB doesn't work as well and seems to be no telemetry-in/out, just game-FFB. Windows Version is 10 Pro, 1709, Build 16299.611

 

PS: Are there any .Net or other Windows-"features" need to be active that maybe aren't?