Hello Gary Pegoraro,
Thank you for posting to Microsoft Q&A. I understand how frustrating it is to be stuck in a loop where the password is accepted for a few seconds before kicking her out again, especially after you have already tried removing and re-adding the account.
Since your account works on the same laptop, this suggests the issue is likely a "Credential Conflict" stored deep in Windows. The system might getting confused between the old, saved token for her account and the new one you are trying to enter.
Please try these steps to clear that conflict:
Step 1: Clear Windows Credentials
This helps clear the specific saved password that is causing the conflict without touching your working account.
- Close Outlook completely.
- Click the Start button and type: Credential Manager.
- Open it and select the Windows Credentials tab (not Web Credentials).
- Scroll down to the Generic Credentials section.
- Look for entries that start with MicrosoftOffice16_Data:SSPI, MicrosoftAccount, or SSO that include your wife's email address.
- Click the arrow to expand the entry and select Remove.
- Note: Do not touch the entries associated with your own email.
- Restart your computer (mandatory to flush the cache).
- Open Outlook. It should ask for her password one last time. Check the box "Remember my credentials" and sign in.
Step 2: Create a New Outlook Profile
If clearing the credentials does not stop the prompt, the profile database itself may be corrupted. We can create a fresh one to test.
- Close Outlook.
- Open the Control Panel and search for Mail (Microsoft Outlook).
- Click Show Profiles.
- Click Add and name it something new (e.g., Wife_Email).
- Follow the prompts to add only her email account to this new profile.
- Once set up, change the setting at the bottom of the window to "Prompt for a profile to be used".
- Click Apply and OK.
- Open Outlook and select the new Wife_Email profile when asked.
Result: If her email stays connected in this new profile, the old one was corrupted. You can later add your email to this new profile and delete the old one.
I hope that clearing the credential manager resolves the sign-in loop. Please let me know if the password prompt disappears after the restart.
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