Microsoft has announced that it is working on a solution for the Outlook issue that caused documents to appear blank.

      The issue affected Office documents accessed from OneDrive and SharePoint links in classic Outlook.

      Microsoft has announced that it has begun the rollout of a service-side update to address a classic Outlook bug that led to Office files opening blank, showing repair prompts, or displaying corruption warnings.

      This issue impacts Word, Excel, and PowerPoint files that are opened via OneDrive and SharePoint links in classic Outlook. For users within Microsoft 365, the main concern isn't just the blank documents; it's the confusion Outlook creates when a file that seems fine suddenly appears damaged.

      As this is a change on Microsoft's side, users will not need to perform any manual installations.

      A server-side update is being implemented

      The rollout commenced on May 4, 2026, and will gradually reach the affected Microsoft 365 installations. Once this update is applied, users may need to restart classic Outlook for the links to function correctly again.

      The bug is associated with how classic Outlook processes Microsoft 365 file links. This can cause a document to seem corrupt in Outlook, even though the same file still opens properly from SharePoint, OneDrive, or directly from the internet.

      This detail is important for typical troubleshooting, as the repair warning might mislead users when a quicker solution is to access the file outside of Outlook.

      Alternative methods can keep files accessible

      Until the rollout is complete, the easiest workaround is to open the file outside of classic Outlook. Users can paste the link into a web browser, access the document directly from SharePoint, or use Outlook on the web.

      Right-clicking a shared link and selecting the browser option can also provide immediate access when a document requires quick attention. The objective is to prevent a functioning file from being mistaken for a damaged one.

      Microsoft also offers a registry-based workaround for IT administrators and advanced users. However, most users should avoid this unless it is executed within a managed setting.

      What to monitor next

      The update is currently being distributed across Microsoft 365, but the timing will differ depending on the affected setup. If Office files still load blank in Outlook, users should restart classic Outlook once and utilize a browser-based workaround if the issue persists.

      IT teams should remain alert for recurring issues linked to OneDrive and SharePoint links in classic Outlook. The clearest indication that the update has been applied will be that Word, Excel, and PowerPoint files should open in Outlook without false alarms.