Microsoft 365 障害・稼働状況

Microsoft 365 is receiving an elevated number of user reports. 20 reports have been recorded during the current 20-minute period.

Users are reporting elevated issues accessing Microsoft 365 since 2026-08-31 17:51:49 UTC. Detection window: 30 reports total, 27 in the last 5 minutes and 30 in the last 15 minutes; latest report at 2026-08-31 18:09:38 UTC. Reports remain elevated. Microsoft’s public service status showed no active advisory at the time of this check. ([status.cloud.microsoft](https://status.cloud.microsoft/en-us/status))

Users have reported issues affecting Microsoft 365 starting 2026-08-24 18:04:05 UTC. There are 20 reports in the detection window (9 in the last 5 minutes); the report trend is slightly declining — 18:00 UTC: 11 reports; 18:05 UTC: 9 reports. Most recent report: 2026-08-24 18:08:11 UTC. No public advisory from Microsoft’s official status feeds was observed at the time of this update.

Multiple users are currently reporting difficulties accessing Microsoft 365 services. The issue appears to be affecting various functionalities within the platform. Efforts to identify the cause are ongoing, and no estimated time for resolution has been provided. We will continue to monitor the situation and share updates as more information becomes available.

We are currently observing reports of users experiencing difficulties accessing Microsoft 365 services. Efforts to assess the situation are ongoing, and further updates will be provided as more information becomes available. Users are advised to remain patient while the issue is being investigated.