Microsoft Sudoku has once again lost my progress on daily challenges. Please advise when this issue will be fixed and my progress will be restored.

I had a sudoku score of over 230, as far as I remember, and I was logged in when I started sudoku. I got a question regarding my sudoku skills, and answered it. For some reason the game selected an easy mode by itself, so I solved it quickly, and got a score of 1! The above solution did not help me since this new score was saved when I finished the game.

Thank you this worked for me!

userprofile\AppData\Local\Packages\Microsoft.XboxIdentityProvider_cw5n1h2txyewy\AC\TokenBroker

Where do I find this? I searched my computer and can't find it. it it in Xbox?

You need to use Windows File Explorer. Make sure that you select to show Hidden Items. Start by clicking on your C: drive. Then you should see the path as described in the fix.

Replace "userprofile" with your username and note that the random numbers and letters in the "Microsoft.XboxIdentityProvider_cw5n1h2txyewy" may be different. Just select the only folder that starts with "Microsoft.XboxIdentityProvider_" and you should be OK.

After implementing this fix and playing Sudoku for awhile, it seems that Sudoku no longer saves a game in progress. Previously, I could start a game, then click the Back arrow to go back to the Home Screen and exit the program. Then, when I restarted Sudoku it would let me rejoin the game I was playing and remember my progress in that game. That doesn't work any more after this fix. But, at least the fix did let Sudoku remember my Level so that is something.