I received this error message right after I unplugged the power cord to my desktop to check my power supply and a couple of other internal peripherals. That's literally all I did, and it worked fine the last time I used it several hours before. I did NOT forget my password and had been using the same pin with no issues.
After I plugged the cord back in, it prompted me to go into the BIOS to update settings. I figured something got reset, so I told it to reset and save and it said nothing changed, so I exited and it reboots. It goes to Windows and this message pops up. There was NO repeated password failures or no forgotten PIN or password. Instead of waiting the couple of hours that didn't look like it fixed anyone else's issues, this is what I did...
I restarted my desktop one more time and when it gives me my usual PIN prompt, I tell it that I forgot my password by clicking the link below the PIN entry field. It prompts me to enter my current password, so I enter it and then it asks me if I'm sure I want to reset my PIN. I hit cancel and then I'm in. My PIN remained unchanged and it worked fine the next day when I logged in from a cold boot.I
It's shameful that Microsoft won't even address this issue. Something is causing this prompt to come up and there should be a better option than to have to reset everything if you weren't able to do what I did.