Microsoft reports they are slowly implementing a fix for the root cause of this issue. T&I will continue to monitor the issue and update here when more information is available and / or when the issue is completely resolved.
Posted Nov 12, 2026 - 18:53 EST
Update
Microsoft is reporting that they have identified a potential fix and are working to implement it broadly across the servers that host Outlook.
Posted Nov 12, 2026 - 16:20 EST
Update
Microsoft continues to work on a resolution for this widespread Outlook outage. T&I continues to closely monitor Microsoft’s status and will provide an update here when available.
This issue is affecting Outlook accounts globally.
Posted Nov 12, 2026 - 15:20 EST
Identified
Microsoft has identified an issue affecting infrastructure related to Outlook and is working to repair and rebalance this back-end infrastructure to restore capacity.
Posted Nov 12, 2026 - 14:16 EST
Investigating
Microsoft is reporting an issue affecting Outlook. T&I is aware of this issue and will post updates as soon as they are available.
Posted Nov 12, 2026 - 13:15 EST
This incident affects: Enterprise Applications (Microsoft 365).