@LKS90 by chance are you running a non-English version of windows? There normally would be an error print for that error code.

Unsupported console settings. In order to use this feature the legacy console must be disabled.

1. Open cmd.exe
2. Right click title bar -> Properties -> Uncheck Use legacy console
3. Click OK

@benhillis my system is in english, I might have switched it from german at some point though.

Unticking the "legacy" option solved the problem, thanks!
Quick question: Where did you find the information for the Error Code? I googled 0x80040406 but came up with (I think) unrelated results

@LKS90 Great I'm glad it solved your problem!

The error code is actually just defined locally in our project so we can print actionable error codes to the user. Once our error message are localized you should see the correct string error message. We basically have a big switch statement that maps error codes to strings. The actual error code of the API that fails due to legacy console is very generic (E_INVALIDARG I think) so we had to define our own error code. Hope that makes sense :)