Unable to sign in to Microsoft Solitaire Collection via a windows 10 pc.

Head on over to the Casual Games Community and they might be able to better assist. https://community.microsoftcasualgames.com/

One year later, none solution, unable to sign with Microsoft Sudoku and CAN sign with Microsoft Solitaire. Windows 10.

Saving Microsoft Solitaire Collection progress between Windows 10 and earlier versions

With the Windows 10 version of Microsoft Solitaire Collection, your progress is automatically saved to the cloud. This means you can sign in on any Windows 10 device and pick up right where you left off. The cloud even saves your progress on challenges and
achievements.

If you're also using a Windows 8 or 8.1 device, your progress is automatically saved to the cloud as well, and you can keep earning achievements and completing challenges between other Windows 8, 8.1, and Windows 10 devices.

Note Any achievements and challenges that you complete on your Windows 10 device will not be available on your Windows 8 or 8.1 devices. The Windows 10 version of Microsoft Solitaire Collection contains new features and challenges that aren't
available in previous versions of the game.

For example, if you play Microsoft Solitaire Collection on your Windows 8.1 device at work and complete all the daily challenges, you’ll find that these challenges are incomplete when you open Microsoft Solitaire Collection on your Windows 10 device at home.
The next day, when you return to your Windows 8.1 device, the challenges from the previous day will show as completed.

Yes, it is possible to sign on to another computer to continue your game. Your progress in Microsoft Solitaire Collection is saved to the cloud. This link has more information:

https://support.xbox.com/en-US/games/game-titles/saving-microsoft-solitaire-collection-progress-wind...

Hi, Pam.

Based on this information, I can suggest this potential fix:

Step 1.
Press the Windows key + R key to open the Run window > type wsreset.exe > wait until the store opens automatically, and sign out of your account.

Step 2.
Press the Windows key + I to open PC Settings > Apps & Features > Installed apps > locate the Solitaire Collection app and go to advanced settings > click on “repair” and “reset”.
Open the Solitaire Collection app and sign out of your account if you're logged in automatically.

Step 3.
Restart your PC and sign in with the account that owns the Solitaire Collection subscription on both the Microsoft Store and the Solitaire Collection app.