Hi Daphne,
Based on the error message you’re seeing, it seems like there might be an issue with your account credentials. Here are some steps you can try to resolve the issue:
- Sign out of all existing accounts and exit all Office apps.
- Remove all Office 365 credentials that look like: MicrosoftOfficeXXData:XXXXXXXXX from your Windows Credentials in Control Panel > User Accounts.
- Try signing in again.
If the issue persists, you can also try using the SARA tool to troubleshoot the sign-in or activation issue <sup>1</sup>. If none of these steps work, you can try reinstalling Office from scratch <sup>1</sup>. I hope this helps! Let me know if you have any other questions or concerns.