2 Days Sudoku not signing into XBox

I have the exact same problem. Have uninstalled and reinstalled. Can click on the green xbox button in the upper right corner of Sudoku, and sign into xbox just fine, but Sudoku can't sign in. Have even exited Sudoku, and punched the "Play Sudoku" button
within xbox, which starts Sudoku, but Sudoku still can't connect. All of my other games work fine.

I have seen a message from time to time within Sudoku over the last 2 days which seems to say that this is a new version and you don't have to sign into xbox to play, but then I lose all my history of what has happened in the last 4 years. The message disappears
before I can study it. Is this a new version? Or maybe I am misinterpreting the message.

I have the exact same problem. I have uninstalled & reinstalled with no result. I can click on the green xbox button in the upper right hand corner of Sudoku and be signed into xbox without any problem. I can exit Sudoku, sign into xbox, and punch the
"play Sudoku" button, which initiates Sudoku, but Sudoku still says it cannot connect to xbox.

I have on a couple of occasions seen a message momentarily when I first initiate Sudoku that seems to imply that this is a new version of Sudoku and you don't have to sign into xbox to play it. But then I don't have any history
of my playing Sudoku over the past 4 years. The message disappears before I can study it. Is there a new version of Sudoku that is causing my problem?

Help

Yes, the last 2 days, Sudoku won't open or closes unexpectedly. What's up?

Same here. Open xbox and I'm signed in. works with every other game just not sudoku and I had completed every day of the challenges this month! Not happy. Worked last night.

Having same problem. Will log into all other games but not Sudoku. I have been trying for 2 days now.