Can't edit Word or Excel files saved in OneDrive.

Q. I want to edit and save Word or Excel files stored in OneDrive, but I see messages like "SIGN IN REQUIRED — We can't upload or download your changes because your cached credentials have expired." or "Please sign in ( )" and cannot edit or save. What should I do?

A. This error occurs because of file conflicts between OneDrive and Office applications.

Please try the following steps:

1.  Open Word or Excel, click the account name icon in the top-right corner, and then click "Sign out".
2.  Make sure the account name icon in the top-right now shows "Sign in".
3.  Close Word or Excel.
4.  Open Word or Excel.
5.  Click the "Sign in" button next to the message "SIGN IN REQUIRED — We can't upload or download your changes because your cached credentials have expired.".
6.  Sign in using your THERS account.