Microsoft 365 service disruption
Microsoft is investigating a global issue affecting Outlook/Exchange Online email and other Microsoft 365 services. Aliando is monitoring and will post updates here.
Service Alert: Microsoft 365 Outage Affecting Email and Connectivity
Posted: 13 November 2026, 12:30 AM IST | Status: Ongoing
Microsoft is currently experiencing a service disruption affecting Microsoft 365. Users may be unable to access Outlook / Exchange Online mailboxes, or may experience slowness or connection failures with other Microsoft 365 services.
What’s happening
The issue began on 12 November 2026 at around 11:16 PM IST (17:46 UTC). It was first reported in the Americas, but Microsoft has confirmed it may affect users in any region. Microsoft is tracking it under incident EX1550543. A separate Microsoft Teams issue in North America (TM1550488) is also being worked on and is showing signs of improvement.
Who is affected
Organisations using Microsoft 365 business and enterprise services, especially Exchange Online email. This is an issue on Microsoft’s side. Your accounts, data and settings are not affected by anything on your end.
What you should do
- No action is needed on your devices. Please avoid resetting passwords, reinstalling Outlook or recreating profiles, as these won’t fix the problem.
- Emails sent during the outage may be delayed rather than lost.
- If you’re an admin, check Health > Service health in the Microsoft 365 admin center for incident EX1550543. If the admin center won’t load, Microsoft is posting updates at msft.it/6019x6vbN.
- For anything urgent, use an alternative channel such as phone.
Estimated resolution
Microsoft has not yet shared a cause or a timeline for a fix.
Next update
We’ll update this page as soon as Microsoft shares new information. For help, contact the Aliando support team at [phone / email / website formfill].
Last updated: 13 November 2026, 12:30 AM IST
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