Windows Hello not working (cam an PIN)

Hi there

I've enrolled my Surface 4 to Intune and had some problems with the Windows Insider configuration. I un-enrolled the device, deleted the local profile (went back to a MS account to login) and enrolled it new - since then I cannot sign in with Windows Hello using the cam or PIN.

Cam:

It feels taking longer to go through the process. Move away from camera... move away and away... then move closer... move closer... strange - it finally says it worked but then I get an error when signing in.

PIN:

I've Azure MFA activated and approve the login attempt, after that I get the attached error message.

Any hint on that?

Thanks

Udo