A widespread service issue is impacting Microsoft Teams users globally this Thursday, preventing many from opening embedded Microsoft Office documents within the collaboration platform.

Reports began surfacing early this morning, with users expressing frustration over their inability to access essential files like Word documents, Excel spreadsheets, and PowerPoint presentations directly in their Teams channels and chats.

The issue disrupts a core function of the Teams application, which is designed to provide a seamless environment for collaboration. Typically, users can open and co-author Office files without leaving the Teams interface.

However, the current problem forces a broken workflow, with users reporting that clicking on an embedded file results in a continuous loading screen, an error message, or a blank window.

The disruption is causing significant productivity hurdles for organizations that rely on Teams as their central communication and work hub. The inability to quickly review reports, update shared spreadsheets, or access presentations is forcing employees to find alternative methods to continue their work.

Microsoft has officially acknowledged the problem and has begun an investigation. An advisory has been posted to the Microsoft 365 Service Health Dashboard under the incident ID TM1143347.

In the initial notice, Microsoft confirmed it has received reports of an issue impacting users’ ability to open embedded Microsoft Office documents and is analyzing diagnostic data to isolate the root cause.

We've received reports of an issue impacting users' ability to open embedded Microsoft Office documents within Microsoft Teams. Additional information can be found within the Service Health Dashboard under TM1143347.
— Microsoft 365 Status (@MSFT365Status) August 28, 2025

While Microsoft engineers work toward a resolution, affected users have identified several temporary workarounds. These include:

Using the “Open in Browser” option to view the file in the respective Office web application.
Selecting “Open in Desktop App” to launch the file in its native program.
Downloading a local copy of the file to their computer.
Navigate to the underlying SharePoint or OneDrive folder where the file is stored and open it from there.

IT administrators are advised to monitor the Service Health Dashboard for the latest technical updates and progress on a fix.

Microsoft has not yet provided an estimated time for resolution, but has confirmed that the issue is being treated with high priority. Users are encouraged to utilize the suggested workarounds to minimize workflow disruptions.

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