Microsoft investigates Office web and Teams file access

Microsoft investigates – Microsoft is investigating an ongoing incident that prevents some users from opening files in Office for the web and Microsoft Teams, including Excel for the web. Impacted users see an error message saying Office Online services aren’t available right now, whi

When Microsoft 365 users try to open a document and the file simply won’t load, it doesn’t feel like an outage at all. It feels like a broken task—right in the middle of work.

Microsoft says it is investigating reports that some users are unable to open files in Office for the web or Microsoft Teams. The company posted the warning from its Microsoft 365 Status account earlier. saying: “We’re investigating reports that some users are unable to open files in Office for the web or Microsoft Teams.”.

The issue is not limited to one app. In additional information shared in the admin center under MO1329446, Microsoft said the incident affects multiple Office Apps. Excel for the web is explicitly included, along with PowerPoint, among others.

For affected users, the problem shows up immediately when they attempt to open documents. Microsoft said impacted users are shown an error message that reads: “Office Online services aren’t available right now. We’re working to restore all services as soon as possible.”

The company has not said which regions are affected and has not offered a final remediation timeline. What Microsoft did share is that it’s currently investigating service telemetry to isolate the root cause of the failure.

In a subsequent update. Microsoft narrowed its theory. stating that “initial analysis indicates a potential cross-service issue impacting Office for the web experiences.” The incident is being tracked as an ongoing outage. a label the company uses for critical service problems that cause noticeable user impact.

The file-access incident lands after other disruptions that also reached across Microsoft’s platforms. Earlier today. Microsoft addressed a separate issue that blocked customers from setting up multi-factor authentication (MFA) on some accounts or from accessing the MySignIn service. In that case. the company blamed platform access issues on a recent cache configuration change that required a failover. with high CPU and memory utilization triggered as traffic from European Union customers began to peak.

This is the latest in a string of recent Teams and related service issues Microsoft has had to fix. In April. it resolved a known problem caused by a recently deployed backend change that blocked some Microsoft Teams Free users from chatting and calling others. The same month. it also dealt with a bug introduced by a Microsoft Edge browser update that prevented Windows users from joining Teams meetings.

Microsoft later reverted a service update in April that had blocked some Teams users from launching the desktop client. Those users were left stuck on the loading screen showing: “We’re having trouble loading your message. Try refreshing.”

For now, Microsoft’s focus remains on telemetry and a cross-service explanation that it says is only initial. The company has not restored access publicly. but it has made clear it is working to restore all services as soon as possible—exactly the promise echoed in the error message users are currently seeing.

Microsoft Office for the web Teams MO1329446 Office Online services aren't available right now Excel for the web PowerPoint incident cloud productivity telemetry cross-service issue