Log out can't log in and there's no help out there whatsoever. I knew I should've stayed PS...

Hi, Milan! It's my pleasure to assist you with this today.

Please follow these steps. Make sure to close any games and applications before proceeding.

Press Windows Key + R to open Run

Type "control.exe keymgr.dll" and hit Enter. This should open Credential Manager

Click "Windows Credentials."

Scroll down to "Generic Credentials" and look for every single one that starts with "Xbl". This includes XblGrts, Xbl| and Xbl_Ticket.

Then remove them all one by one.

Open the Microsoft Store by pressing Windows Key + S, typing Microsoft Store, and selecting App Settings.

Click on Repair and then Reset the app.

Repeat the same process for the Xbox App.

Restart Your Device:

After repairing and resetting both apps, restart your device.

Sign back into both the Xbox App and the Microsoft Store using the same email.

Let me know if that works. Thank you!

Hi there, were you playing a game that required Xbox Live to be playing it? If you were and your internet dropped out, that might be the reason it signed you out like that.

Have you tried playing without an internet connection to see if it does the same thing?

HAVING SAME PROBLEM.. SPENT 2 HOUR ON PHONE TO MICROSOFT. NO ANSWER S.HOPE SOME ONE CAN WORK IT OUT .BECAUSE THEY CAN'T WORK IT OUT.

Yes, here are instructions:
windows.microsoft.com/.../sign-in-out-of-windows

It was Assassin's Creed Unity and yes I have played it offline. If your playing a co-op mission, (which I wasn't) it just kicks you back to free roam if you lose your connection.