Hello,
Encountered the same type of error today. It looks like there is something messed up when setting up a Microsoft Account in your PC-A, possibly using Authenticator or logging in with a local account. Anyway, try this solution:
- Go to Settings -> Account -> Sign-in options.
- In Additional settings uncheck "For improved security, only allow Windows Hello sign-in for Microsoft accounts on this device (Recommended)"
- Now press Win + L and in the lock screen sign in with your Microsoft account.
This instantly solved a problem for me. Hope it helps others too.