Hello,carol smith2
Thanks for using Microsoft products and posting in the community.
Regarding the prompt that you are experiencing that the cached credentials have expired, are you experiencing this issue in Microsoft 365?
If you are experiencing this issue in Microsoft 365, you can try the following options:
- Press Win + Q to open Search, search for Credential Manager, open it and then click on Windows Credentials. Find all your Office credentials in there, delete them and then try to log back into your Microsoft 365;
- If you have previously used office's automatic backup on OneDrive. Please open Word, select File in the top left corner, then click Account in the bottom left corner, in the bottom left corner of the newly opened interface you can see the OneDrive you have linked, please click Delete to disconnect from OneDrive. Then restart your computer and open office again to see if the problem still exists;
I hope you can tell me the result of your operation, in the meantime I will discuss your problem with other engineers and will give you further support according to your reply.
Best Regards,Arthur - MSFT | Microsoft Community Support Specialist