An issue has occurred where posts in specific Microsoft Teams channels cannot be loaded.(TM1468506)

Incident start time：September 7, 2026, 15:46 -

Incident details：Microsoft outage

TM1468506:Your organization is affected by this event, and users attempting to view certain channel posts in Microsoft Teams are impacted.

Status：Microsoft is investigating the cause. We will update this page as soon as we have the latest information.

2026-09-07 17:52
We've identified that a recent service-side change caused some channel messages containing attachments to be stored in a format that prevented affected channels from loading as expected. We've rolled back the service-side change to prevent further impact and are deploying a client-side fix to affected tenants so that previously impacted channels can load correctly. We're validating the deployment progress and expanding the mitigation to additional affected users.