Microsoft 365 and email troubleshooting checklist

Use Microsoft 365 & Email for Outlook, Teams, OneDrive, SharePoint, mailbox, calendar, or mail-delivery issues.

Include these details

• The affected user and application
• Whether the issue occurs in the desktop app, browser, mobile app, or all three
• The exact error message
• When the issue began
• Whether other users are affected
• For mail delivery, the sender, recipient, approximate time, and subject line

Safe checks

1. Confirm the device has internet access.
2. Try the Microsoft 365 web application in a private browser window.
3. Restart the affected application once.
4. Do not remove the account, delete a mail profile, or reinstall Office unless instructed.

Never send a password or MFA code. Unexpected sign-ins or MFA prompts belong in Security Incident or Suspicious Activity.