Outage in Microsoft 365
Unable to open files in Office for the web or Microsoft Teams
Resolved Minor
June 02, 2026 - Started about 9 hours ago
- Lasted about 2 hours
Incident Report
Summary AI Generated
Microsoft 365 users experienced a 1.8-hour outage where they were unable to open files in Office for the web and Microsoft Teams, with affected applications including Excel and PowerPoint displaying "Office Online services aren't available right now" error messages. Users also reported issues with Outlook web version, calendar loading problems, and 503 Service Unavailable errors when accessing Microsoft 365 services. Microsoft identified elevated error rates across Office for the web experiences due to a cross-service issue and restored service availability to normal levels.
Title: Unable to open files in Office for the web.
User impact: Users may be unable to open files in Office for the web.
More info: Impacted Office Apps include, but are not limited to:
- Excel
When users open documents, impacted users are shown the following the following error message "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon."
Current status: We're investigating service telemetry to isolate the source of the issue.
Scope of impact: This issue could impact any user attempting to access Office Apps using Office for the web or Microsoft Teams.
Next update by: Monday, June 1, 2026, at 2:30 PM UTC
Components affected
Microsoft 365 suiteTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
about 8 hours ago - at 06/01/2026 03:09PM
Our telemetry indicates that service availability has returned to normal levels. We're monitoring the service to confirm sustained service stability and continuing to investigate the underlying root cause of the issue.
This quick update is designed to give the latest information on this issue.
about 8 hours ago - at 06/01/2026 02:27PM
Title: Unable to open files in Office for the web or Microsoft Teams
User impact: Users may be unable to open files in Office for the web or Microsoft Teams.
More info: Impacted Office Apps include, but are not limited to:
- Excel
- PowerPoint
When users open documents, impacted users are shown the following the following error message "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon."
Current status: We’re continuing to analyze service telemetry and have identified elevated error rates across Office for the web experiences. We’re correlating these error patterns across service dependencies to further isolate the source of impact and determine appropriate mitigation steps.
Scope of impact: This issue could impact any user attempting to access Office Apps using Office for the web or Microsoft Teams.
Next update by: Monday, June 1, 2026, at 3:30 PM UTC
about 9 hours ago - at 06/01/2026 02:06PM
Initial analysis indicates a potential cross-service issue impacting Office for the web experiences. We’re continuing to investigate service telemetry to isolate the source of the issue.
This quick update is designed to give the latest information on this issue.
Next update by: Monday, June 1, 2026, at 2:30 PM UTC
about 9 hours ago - at 06/01/2026 01:49PM
Title: Unable to open files in Office for the web.
User impact: Users may be unable to open files in Office for the web.
More info: Impacted Office Apps include, but are not limited to:
- Excel
When users open documents, impacted users are shown the following the following error message "Office Online services aren't available right now. We're working to restore all services as soon as possible. Please check back soon."
Current status: We're investigating service telemetry to isolate the source of the issue.
Scope of impact: This issue could impact any user attempting to access Office Apps using Office for the web or Microsoft Teams.
Next update by: Monday, June 1, 2026, at 2:30 PM UTC
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