Using New Outlook on Windows for academic communication and scheduling
Hello @P26701132-SAMIDHA TAMBE,
I completely understand how disruptive it is to be unable to access Outlook, especially when it affects your daily work. You are not the only one experiencing this issue—Microsoft has confirmed a widespread Microsoft 365 service incident (Incident ID: MO1550821) that is impacting Exchange Online and related services, including Outlook on the web, Outlook desktop (MAPI), Exchange ActiveSync, and REST-based connections. Email delivery may also be delayed.
The issue began on November 13, 2026, at 1:26 AM GMT+7, and Microsoft has classified it as a service degradation affecting multiple Microsoft 365 services.
As of the latest update at 6:01 PM GMT+7, Microsoft has made additional progress toward recovery, particularly across portions of the affected infrastructure in the Asia Pacific region. Traffic is being gradually restored, and improvements have been observed in key scenarios including mailbox access and delayed email processing. However, some users may still experience intermittent issues while recovery continues.
Microsoft is extending recovery actions to other affected regions, stabilizing the service, and adding capacity to improve consistency. Reducing email queues and backlogs remains a priority, and the email timeout window has been extended to 48 hours to help protect delayed messages while delivery catches up.
Please rest assured that this is being treated with the highest urgency. I will continue monitoring the service health updates and will share any new information as soon as it becomes available.
I sincerely appreciate your patience, understanding, and cooperation while this matter is being resolved. Please feel free to let me know if you have any further questions or if there is anything else I can assist you with in the meantime.
Best regards,