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

      The bug affected Office documents accessed through OneDrive and SharePoint links in classic Outlook.

      Microsoft has announced the release of a server-side update to address a classic Outlook issue that caused Office files to appear blank, prompt for repairs, or display corruption warnings.

      This problem pertains to Word, Excel, and PowerPoint files opened via OneDrive and SharePoint links while using classic Outlook. For Microsoft 365 users, the main challenge goes beyond just a blank screen; it includes the confusion caused when a potentially functional file seems to be broken.

      Since the update is being implemented from Microsoft's side, users will not need to perform any manual installations.

      The server-side update is currently being rolled out.

      This update commenced on May 4, 2026, and will gradually be available to affected Microsoft 365 environments. Once deployed, users may have to restart classic Outlook for the links to function correctly again.

      The bug is related to how classic Outlook processes Microsoft 365 file links. This may cause Outlook to display a document as corrupt even if the file can still be opened from SharePoint, OneDrive, or the web.

      This distinction is important for everyday troubleshooting, as the repair warning may mislead users when the quicker solution is to access the file outside of Outlook.

      There are alternative methods to continue accessing files.

      Until the update is fully rolled out, a straightforward workaround is to open the file outside of classic Outlook. Users can paste the link into a browser, access the document directly from SharePoint, or use Outlook on the web.

      Right-clicking on a shared link and selecting the browser option can also facilitate immediate access to a document that needs urgent attention. The intention is to avoid treating a functional file as if it were damaged.

      Microsoft also offers a registry-based workaround for IT administrators and advanced users. However, most users should avoid this method unless operating in a controlled environment.

      What to expect next

      The update is already being distributed across Microsoft 365, though the timing will vary by specific setups. If Office files continue to show as blank from Outlook, users should restart classic Outlook once, and if the issue persists, utilize a browser-based workaround.

      IT departments should monitor for recurring issues related to OneDrive and SharePoint links in classic Outlook. The most obvious sign that the update has been implemented is that Word, Excel, and PowerPoint files should open in Outlook without any false alerts.