Hi Bmlom72,
The issue occurs because the credentials stored in the computer are different from those on the server. You can try the following steps to see if the issue can be solved.
- Exit all Office applications.
- Removing all the stored credentials in the credentials manager (Control Panel >
User Accounts > Credential Manager > Windows Credentials). (NOTE: This will remove your stored passwords.)
- Run regeditas administrator.
- From Registry Editor, browse to:
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity
5. Delete the Identity folder.
6. Open an Office application like Word and sign in with the Office 365 account.
Note: Before you modify the registry, back up the registry for restoration in case problems occur. Change 16.0 to 15.0 if you are
using Office 2013.
***WARNING:***Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Edit at your own risk.
Thanks,
Ran