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Microsoft Word Bug Affects PDF Saving to SharePoint Online

Microsoft Word Bug Affects PDF Saving to SharePoint Online

First seen 1 Oct 2026, 10:58 UTC • •
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ThreatCluster AI
ThreatCluster •October 2, 2026 at 10:08 UTC
  • •A bug in Word 2609 affects PDF saving to SharePoint Online.
  • •Files are saved to a local cache with random names, no error shown.
  • •Users can use alternative saving methods while waiting for a fix.

Microsoft has confirmed a bug in Word for Windows version 2609 that prevents users from saving documents as PDFs to SharePoint Online locations. Instead of saving to the selected SharePoint location, files are saved to a local cache folder with random names, and no error message is displayed. This issue affects users who utilize the Save/Save As function for PDFs specifically targeting SharePoint. Users can still save documents to alternative locations or use the Export option to create PDFs. Microsoft has not yet provided a timeline for a fix, and some users have resolved the issue by rolling back the update. The bug follows a series of recent issues with Microsoft 365 and Windows updates, including data loss incidents and other functionality problems.

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Timeline

2026-09-29
Bug confirmed by Microsoft
Microsoft acknowledged an issue in Word 2609 affecting PDF saves to SharePoint, with files redirected to a local cache.
support.microsoft.com
2026-09-29
Article published on bug
The Register reported on the Word bug, detailing user experiences and the lack of error messages.
The Register

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Common questions

What versions of Word are affected?
The issue affects Word for Windows version 2609 (16.0.20430.x).
Is there a fix available?
No fix has been announced yet, but users can roll back to a previous version to resolve the issue.
What should I do if I'm affected?
Use the Export option to save PDFs or save to a different location until a fix is released.