Outlook login is locking out Active Directory

Question

Outlook login is locking out Active Directory.

AD and Outlook use different accounts.

Answer 1

Hi Michael Chapman,

It appears you're experiencing an issue where Outlook login attempts are incorrectly locking out Active Directory accounts. Here are some likely causes:

1. Cached credentials issue: Outlook may be trying to use cached credentials for the wrong account. To Clear credfential cache or affected users:
   • Run control keymgr.dll and remove any saved credentials
   • Or use cmdkey /delete commands
2. Check Outlook autodiscover configuration:

• Run Outlook with /resetautodiscover switch
• Verify autodiscover is pointing to the correct endpoint

1. Review account mapping:

• Ensure Outlook is configured with the correct account
• Verify UPN (User Principal Name) matches between systems

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Answer 2

Hi @Michael Chapman

This is Camila from Q&A Community Support team.

It’s my pleasure to hear that our response helped resolve your issue! Of course, the credit also goes to you - your technical expertise and quick action in following the guidance made all the difference in achieving a great result.

Is there anything else I can assist you with? If not, please feel free to let me know so I can close this post.

Also, if you found the answer helpful, we’d really appreciate it if you could click "Accept Answer" and kindly give it an upvote. Your feedback helps others in the community too!

Best Regard!

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