If you see the message That Fingerprint has already been set up on another account, Try a different finger when you try to set up Windows Hello on Windows 11/10 do the following:

1. Open Services console (Windows key + R and type Services.msc). Stop the service called  Windows BioMetric Service (WbioSrvc)
2. Open folder location in file explorer: C:\Windows\System32\WinBioDatabase\. On this location, there will GUID.dat files. 
3. For each file, do the following:
   1. Open with notepad
   2. Select all and delete the file content
   3. SaveAs the file to the desktop (select all files to avoid .txt extension)
4. Once all files are duplicated to the desktop, move those files to C:\Windows\System32\WinBioDatabase and replace the existing files
5. Start the service Windows BioMetric Service again.

All bio data will be removed from the computer.  You can set up Windows Hello afresh!