Why did Personal Vault authentication change?

OK Thank you for the detail! Much appreciated.

I simply uninstalled and reinstalled OneDrive - the challenge will be finding a version of OneDriveSetup.exe that isn't broken...

I uninstalled OneDrive - use the Add or Remove programs tool - find Microsoft OneDrive and click on the 3 dots and Uninstall.

You'll need to reinstall OneDrive - there are downloads available from Microsoft. After reinstalling, you log on and use existing folder and then go through the Personal Vault setup.

I’m not computer savvy at all, so I wouldn’t know where to start with that process. Did you reinstate only the OneDrive exe from the previous build data or did you have to reinstate the whole OS?

MS has continued to send me various steps to try and restore two-factor security....resetting, relinking the PC to OneDrive.

Completely uninstalling OneDrive from the PC, then reinstalling and signing into OneDrive and resetting up the Personal Vault.

MS provided a link to reinstall OneDrive - after reinstalling, Personal Vault still defaulted to opening with just a PIN.

I have folders for all of my computer builds - I found an OLDER version of OneDriveSetup.exe (mid-2021) and when I uninstalled and reinstalled with the older version and then went through the sign-in and set up process, TWO-FACTOR authentication was back.

I was initially concerned about all the data I had in OneDrive and in my Personal Vault, however, there were clear options to retain existing data.

I did document all of my findings in my reply to Microsoft.

That is disappointing....this is a Microsoft security failure. I would think there should be some way to get attention to this matter. Security issues are prettyhmuch top priority anywhere!!!