Failed to activate AudioEndpointVolume for master session {"error": "error 2290679816 (FormatMessage failed with: The resource loader failed to find MUI file.)"}

[NirKarl]

After updating various drivers on my PC deej stopped working, with the advice of @IcyRespawn over on the deej discord I went through the devices on my pc until disabling one solved the issue, Hope this helps people stuck with the same issue

[omriharel]

Thanks for documenting this @NirKarl!

We'll keep the issue open until a fix to address it (or at least produce a more meaningful error message) has been released, for easy discoverability. This is slated for the next deej release.

[KiiwiiK]

I had this same issue, but in my case I had to shut down "Nvidia Broadcast".
The debug tool ran fine in CMD which in turn gave me the hint as to what was causing the issue.