hi @vPufi ,
There was a problem before with this
Use Unreal Revision Control to Improve Collaboration in UEFN (fortnite.com)
This problem may be the same as
urc.exe and Unreal Revision Control get flagged as Malware from Microsoft Defender
Finally, reinstall the VSCode extension
C:\Program Files\Epic Games\Fortnite\VSCode\URC.vsix
Start the Epic launcher using right click “Run as administrator”
and run Unreal Fornite “Verify” again