Microsoft Investigates Teams and Office Web File Access Outage
Microsoft is investigating an ongoing incident that prevents users from opening files in Teams and Office for the web, including Excel. Initial analysis indicates a potential cross-service issue and the outage has been tagged as a critical incident.

Users may be unable to open files in Office for the web, with impacted Office Apps including but not limited to Excel.
Affected users receive a specific error message. When users open documents, impacted users are shown the error message "Office Online services aren't available right now. We're working to restore all services as soon as possible." The disruption affects both the free Office for the web cloud-based productivity suite and the Teams collaboration platform.
In a subsequent update, the company revealed that initial analysis indicates a potential cross-service issue impacting Office for the web experiences.
Initial findings point to cross-service involvement. In a subsequent update, the company revealed that initial analysis indicates a potential cross-service issue impacting Office for the web experiences. Microsoft has also tagged this ongoing outage as an incident, a term commonly used for critical service issues involving noticeable user impact.
EXPERT TAKE
Admins should track MO1329446 in the Microsoft 365 admin center for telemetry updates on the cross-service disruption.
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