Microsoft incident · via Microsoft 365 (Business or Enterprise)
Admins may not have been able to view Service Health Dashboard (SHD) and Message Center posts in the admin center
Microsoft experienced a minor incident on June 21, 2026, lasting 2d. The incident has been resolved; the full update timeline is below.
Update timeline
- monitoring Jun 23, 2026, 04:10 AM UTC
Current status: We've identified a problem that may be preventing some admins from viewing the Microsoft 365, operated by 21Vianet, Service Health Dashboard (SHD) and/or Message Center (MC). We’re working to restore access to the SHD and MC, and we'll provide more information when we’ve isolated the root cause. Next update by: Tuesday, June 23, 2026, at 7:00 AM UTC
- monitoring Jun 23, 2026, 06:41 AM UTC
User impact: Admins may not be able to view Service Health Dashboard (SHD) and Message Center (MC) posts in the Microsoft 365 admin center operated by 21Vianet. Current status: We're reviewing contextual details provided by impacted users together with service logs to pinpoint the underlying root cause of impact and determine a strategy to restore access. Next update by: Tuesday, June 23, 2026, at 9:00 AM UTC
- monitoring Jun 23, 2026, 07:29 AM UTC
User impact: Admins may not been able to view SHD and Message Center posts in the Microsoft 365 admin center operated by 21Vianet. Final Status: After a period of monitoring, we confirmed that the impacted infrastructure self-restored, and service returned to expected performance levels. We closely monitored the service to ensure that it remained healthy. Scope of impact: Any admin might have been impacted and might not have been able to view SHD and Message Center posts in the Microsoft 365 admin center operated by 21Vianet. This section could have been updated as the investigation continued. Start time: Sunday, June 21, 2026, at 8:03 AM UTC End time: Tuesday, June 23, 2026, at 7:17 AM UTC Root cause: A portion of the infrastructure performed suboptimally, resulting in impact. Next steps: - We're analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again. This is the final update for the event.
- monitoring Jun 23, 2026, 08:17 AM UTC
User impact: Admins may not have been able to view Service Health Dashboard (SHD) and Message Center posts in the admin center. Final Status: While we were in the process of attempting to redeploy our service resources to the affected section of infrastructure, system monitoring indicated that the service had returned to normal health. We've confirmed that the problem is no longer occurring, and we'll continue to monitor the service to ensure that the problem does not happen again. Scope of impact: Impact was specific to any admin attempting to view SHD and Message Center posts in the Microsoft 365 admin center operated by 21Vianet. Start time: Sunday, June 21, 2026, at 8:03 AM UTC End time: Tuesday, June 23, 2026, at 6:30 AM UTC Root cause: A section of infrastructure that facilitates access to SHD and Message Center posts in the Microsoft 365 admin center operated by 21Vianet performed suboptimally, resulting in impact Next steps: - We're analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again. This is the final update for this event.