Thread experienced a major incident on April 27, 2026 affecting Microsoft Teams Service, lasting 5h 6m. The incident has been resolved; the full update timeline is below.
Affected components
Microsoft Teams Service
Update timeline
- investigating Apr 27, 2026, 05:04 PM UTC
We are currently investigating this issue.
- investigating Apr 27, 2026, 05:11 PM UTC
We are currently investigating an issue where messages from end users in group chats are not being synced to the Thread/PSA. Our engineering team is actively looking into the root cause. An update will be provided in approximately 15 minutes.
- investigating Apr 27, 2026, 05:31 PM UTC
Our engineering team is still actively investigating the issue with end user messages not syncing to the PSA. We appreciate your patience and will continue to provide updates as we make progress. A further update will be shared shortly.
- resolved Apr 27, 2026, 06:11 PM UTC
This incident has been resolved.