SIGN IN REQUIRED We can't upload or download your changes because your cached credentials have expired

 If you are getting the below error in Microsoft O365 or Office apps.

"SIGN IN REQUIRED We can't upload or download your changes because your cached credentials have expired."

Then follow below steps to get this resolved.

1. Close all office apps and then Open Run program
2. Type %LOCALAPPDATA%\Microsoft\Office\16.0\Wef and press enter.
3. Delete everything in the folder.
4. Restart the office app where you got this error.
5. You will find that issue is resolved.