University of Nebraska incident
Users may be unable to connect to their mailboxes in Exchange Online through multiple connection methods
Ongoing since 06:05 PM UTC, affecting Microsoft 365 - Outlook (Exchange Online).
Microsoft has identified connectivity errors occurring on a portion of Exchange Online infrastructure which receives and processes users’ access requests. They have collected networking logs to review to further investigate the source of these errors and confirm their next steps. Potentially impacted connection methods may include: - Outlook on the web - Messaging API (MAPI) - Exchange ActiveSync (EAS) - Representational State Transfer (REST) API
Affected components
Update timeline
- investigating Nov 12, 2026, 06:05 PM UTC
Microsoft has identified connectivity errors occurring on a portion of Exchange Online infrastructure which receives and processes users’ access requests. They have collected networking logs to review to further investigate the source of these errors and confirm their next steps. Potentially impacted connection methods may include: - Outlook on the web - Messaging API (MAPI) - Exchange ActiveSync (EAS) - Representational State Transfer (REST) API
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