Same issue with Corsair Scimitar Elite
Faulting application name: iCUE.exe, version: 3.36.125.0, time stamp: 0x5fbbd88e
Faulting module name: Qt5Core.dll, version: 5.14.2.0, time stamp: 0x5e7dfb32
Exception code: 0xc0000409
Fault offset: 0x00020071
Faulting process id: 0x4f28
Faulting application start time: 0x01d6ed1085c8d8d5
Faulting application path: C:\Program Files (x86)\Corsair\CORSAIR iCUE Software\iCUE.exe
Faulting module path: C:\Program Files (x86)\Corsair\CORSAIR iCUE Software\Qt5Core.dll
Report Id: 185ed5a7-175a-44de-96c1-b78fdc0e7228
Faulting package full name:
Faulting package-relative application ID:
Edit: Mine is working again after a reboot. Hopefully they fix it soon.