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Outlook365 email: preview of email attachment stopped working

jane29
jane29
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Have Outlook365 email - the preview of file attachments, e.g. word, excel, to my emails has stopped working all of a sudden; message is "something went wrong while document preview was being created. Please try again." Is there a setting that I should be looking at to rectify? Browser Version 92.0.1 (64 bit) on desktop, Windows 10. This is only happening in Firefox browser. Have another outlook email using Chrome and the preview feature works! Thx for any insights!

Have Outlook365 email - the preview of file attachments, e.g. word, excel, to my emails has stopped working all of a sudden; message is "something went wrong while document preview was being created. Please try again." Is there a setting that I should be looking at to rectify? Browser Version 92.0.1 (64 bit) on desktop, Windows 10. This is only happening in Firefox browser. Have another outlook email using Chrome and the preview feature works! Thx for any insights!

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jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
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There were numerous reports of this problem occurring with PDFs starting on Monday. I looked at it yesterday, and this was my analysis as of that time:

One possible reason for the inability to preview is that the page is requesting a file that doesn't exist:

https://outlook-1.cdn.office.net/owamail/20210927003.01/scripts/owa.vendors~SxSPdfWorker.js

the 20210927 in that path looks like yesterday's date, so I suspect there was a recent change on the site.

Currently, I think the only workaround would be to use the Download option to view the PDF in a separate tab. If you have the default setting ("Open in Firefox") or prefer to always get the download dialog ("Always Ask"), then Firefox will offer this option. If you set Firefox to always save PDFs or always open PDFs in another program, then that would happen instead. (To view/modify PDF handling settings, see the steps in this article: View PDF files using Firefox’s built-in viewer.)