Outage in Microsoft 365 Consumer
Users may be unable to send messages after a recipient of a new chat accepts the request
Resolved Major
July 28, 2026 - Started 1 day ago
- Lasted about 12 hours
Incident Report
Summary AI Generated
A 12-hour major incident affected Microsoft Teams Free, where users were unable to send new messages after a chat request recipient accepted the conversation. The root cause was identified as a background process failing to trigger correctly when a new chat was accepted. Microsoft resolved the issue by making changes to improve background processing, confirmed through internal monitoring that recovery was underway.
Components affected
Microsoft 365 Consumer Microsoft Teams FreeTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
1 day ago - at 07/29/2026 12:01AM
Title: Users may be unable to send messages after a recipient of a new chat accepts the request
User impact: Users may be unable to send new messages in Microsoft Teams Free.
Current status:
We’ve made changes to improve background processing and confirmed through internal monitoring that the impacted scenario is recovering. We’re continuing to monitor the recovery progress to confirm the issue is fully resolved.
Next update by: Wednesday, July 29, 2026, at 10:00 AM UTC
1 day ago - at 07/28/2026 08:29PM
Title: Users may be unable to send messages after a recipient of a new chat accepts the request
User impact: Users may be unable to send new messages in Microsoft Teams Free.
Current status: Our review of the scenario telemetry logs is taking longer than anticipated, but we're continuing to make progress in understanding the root cause and developing a strategy that remediates impact.
Next update by: Wednesday, July 29, 2026, at 1:00 AM UTC
1 day ago - at 07/28/2026 06:26PM
Title: Users may be unable to send messages after a recipient of a new chat accepts the request
User impact: Users may be unable to send new messages in Microsoft Teams Free.
Current status: We've identified that the process which should occur when a user accepts a new chat isn't trigger as expected. We're continuing to review the scenario telemetry logs to identify why this process isn't completing to determine the root cause and a strategy that remediates impact.
Next update by: Tuesday, July 28, 2026, at 8:30 PM UTC
1 day ago - at 07/28/2026 05:15PM
Title: Users may be unable to send messages after a recipient of a new chat accepts the request
User impact: Users may be unable to send new messages in Microsoft Teams Free.
Current status: We're reviewing scenario telemetry logs to determine why users may be unable to send messages after a recipient of a new chat request accepts in Microsoft Teams Free.
Next update by: Tuesday, July 28, 2026, at 6:30 PM UTC
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