Some users may not receive responses from Microsoft 365 Copilot Chat in the web and desktop apps
Microsoft 365 Copilot ChatCW1517097
Users may be unable to receive responses from Copilot Chat on the web and desktop apps.
Status
Service degradation
Feature
General
Region
Not specified (all regions)
Started
Oct 20, 2026, 16:29 CEST
Duration
1 h 26 min
Last update
Oct 20, 2026, 17:06 CEST
Next update
Oct 20, 2026, 19:30 CEST
Current status
We're reviewing information provided by affected users and service monitoring telemetry to isolate the source of the issue and establish a fix.
More info
Some affected users may see an error message such as "Oops! Something happened. Can you try again?" or experience prompts that remain in progress without completing.
Scope of impact
Some users attempting to use Copilot Chat on the web or desktop apps may be impacted.
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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