Users may be unable to make or receive call using SIP devices.
Status
False positive
Feature
Calling
Region
Not specified (all regions)
Started
Oct 21, 2026, 21:13 CEST
Resolved
Oct 21, 2026, 22:27 CEST
Duration
1 h 14 min
Final status
We've determined that this issue is a duplicate of another event. Please look for further updates in TM1519335. This communication will expire in 24 hours.
This is the final update for the event.
Timeline
Every update Microsoft posted for this issue, newest first.
Oct 21, 2026, 22:28 CEST
We've determined that this issue is a duplicate of another event. Please look for further updates in TM1519335. This communication will expire in 24 hours.
This is the final update for the event.
Oct 21, 2026, 21:44 CEST
We’ve identified the underlying root cause and we are working on developing a fix.
When Microsoft 365 goes down
The live overview shows the current state of every Microsoft 365 service, refreshed every minute from Microsoft Graph.
To see whether your own tenant is affected, check Service health in the Microsoft 365 admin center. Only a backup outside Microsoft protects against data loss, and only a tested break-glass account against locked-out admins. We set up both in fixed-scope sprints.
Source: Microsoft Graph, Service Communications API. This is the view of a Swiss Microsoft 365 tenant: services not licensed there are missing, and individual issues may affect your tenant differently. Microsoft names the region only in the issue text. The Switzerland view shows issues for Switzerland, for Europe in general and those without a region, but not issues that only name other countries such as Germany or the UK. This page is not provided by Microsoft.
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