I wouldn't mind if Microsoft didn't keep breaking Windows PIN and Windows Hello.

Enabled it on a private PC but a different account (a work one) owns the Office license, and now Windows knows that there is an account that owns the Windows license and a different account that owns the Office license.

Result? All kinds of fun that looks like this https://answers.microsoft.com/en-us/windows/forum/all/window... and has many many recommended answers, of which none worked.

What did work, was removing the work account via Accounts > Work or School, and falling back to a local account and password for Windows. At least I can sign in to the machine again.