Embedding Word/Excel files from OneDrive into a webpage via iframes stopped working

As of ~10/31/2026, the iframes display a blank window instead of the expected .DOC/.XLS content. Affects both brand new files AND old files that were previously embedded and working prior to 10/31/2026.

To replicate, try to embed an Excel file into a webpage per these instructions: https://support.microsoft.com/en-US/Excel/share-it-embed-an-excel-workbook-on-your-web-page-or-blog-from-onedrive. Or Word via https://support.microsoft.com/en-us/onedrive/how-to-add-an-embedded-document-or-picture-into-a-webpage.

Symptoms appear to be identical to an earlier instance that occurred from 8/21/2026 to 8/27/2026 (see support case #7107584914).

Issue exhibits whether source .XLS files are created by Excel for Desktop vs. Excel for Web. Files open and share normally from onedrive.live.com, but will not embed.

Browser-independent, occurs on Edge, Chrome, and Firefox). DevTools\Console reports “Uncaught Error: Script error for "odsp.react.lib".