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Microsoft 365 Status

Degraded

microsoft.com 5 components

checked Sep 11, 2026 7:47 PM UTC · Microsoft 365's official status page

Is Microsoft 365 Down Right Now?

Somewhat. Microsoft 365 Microsoft 365 Copilot Chat is slower than normal.

Microsoft 365 Microsoft 365 Copilot Chat is experiencing degraded performance with some services running slower than normal.

Last broke
Sep 11
Uptime
100.00%

90 day period

1 of 5 components affected

serviceDegradationSep 11, 2026 @ 7:37 PM

Some users' Exchange Online email messages may not be retrieved when prompting Microsoft 365 Copilot Chat

Title: Some users' Exchange Online email messages may not be retrieved when prompting Microsoft 365 Copilot Chat User impact: Users' Exchange Online email messages may not be retrieved when prompting Copilot Chat. More info: Some Exchange Online email messages between July 22, 2026, and today may not be retrieved by Copilot Chat when prompted. While we index the affected email messages to our semantic index model, users can prompt Copilot Chat using exact wording to retrieve the email messages. Current status: The fix to correct the code and ensure that future email messages will be indexed correctly is being deployed. In tandem we're repairing the affected email messages and indexing them to fully remediate the impact. Scope of impact: Some users that are attempting to prompt Copilot Chat to retrieve details from Exchange Online email messages between July 22, 2026, and today may be impacted. Start time: Wednesday, July 22, 2026, at 10:07 PM UTC Root cause: A service change introduced a misconfiguration that prevented Exchange Online email messages between July 22, 2026, and today from being indexed by our semantic index model, causing impact. Next update by: Friday, September 11, 2026, at 9:00 PM UTC

View full incident details
Email only. No password. No card.
Incidents

Service health

Service health, last 90 days

Jun 14Today
No problem reported or detectedDetected by Field Check (Beta)Degraded

How to read this

The record

90 day period · not affected by the range above
Availability
100.00%
Last Incident
Degraded
Sep 11, 2026 7:47 PM UTC
Incidents
3
3 degraded
Most impacted
None
Every component stayed up

Availability counts operational or degraded time as available, averaged equally across all monitored components. Partial outages count as half downtime and major outages count in full, scheduled maintenance is excluded from the calculation, and periods with no recorded status are counted as available rather than assumed down. Each component is tracked independently to give you a clear picture of overall service reliability.

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Recent Microsoft 365 outages & status updates

Status changes and service events for Microsoft 365 over the last 30 days

3 incidents over 90 days88 clear days · worst 1 on Sep 1
Microsoft 365 incidents per day over the last 90 days, one row per week
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01 incident

Microsoft 365 Copilot Chat experienced degraded performance

Sep 11 · still ongoing

Some users' Exchange Online email messages may not be retrieved when prompting Microsoft 365 Copilot Chat

Sep 11 · reported by Microsoft 365 · ongoing

Some users may see unwanted add-ins appearing automatically across all Outlook clients

Sep 11 · reported by Microsoft 365 · ongoing

Users may be unable to load themes in Outlook on the web

Sep 11 · reported by Microsoft 365 · ongoing

Some admins may see Microsoft Teams usage report data discrepancies in the Microsoft 365 admin center

Sep 10 · reported by Microsoft 365 · ongoing

Some users in the United Kingdom may have been unable to access multiple Microsoft 365 services

Sep 10 · reported by Microsoft 365 · ongoing

Some users may be unable to access https://m365.cloud.microsoft and receive an error

Sep 8 · reported by Microsoft 365 · ongoing

Some admins' Microsoft 365 admin center usage report data may be delayed

Sep 7 · reported by Microsoft 365 · ongoing

Solid — we detected itHollow — Microsoft 365 reported it
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