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Hello,
Across our company, people using the New Outlook for Windows are suffering the same issue with attachments not opening, previewing or allowing us to save, specifically .pdf file formats.
I've tried running an online Office 365 repair tool, I've also changed the default program for .pdfs from Adobe Reader to Edge on a hunch it was an issue with that. We're up to date on all Windows updates, and switching back to the Old Outlook works as normal.
The same issue occurs when trying to view the file with Outlook Online too.
Is there reported problems with this or a fix I can test/apply to a group please?
Using New Outlook on Windows for personal email, calendar, and contact management
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I have had the same issues. Not just PDF, but even JPG files.
For me it seems to be on shared inboxes, my own inbox is fine.
Again for me the workroun is to forward the message. although you dont need to actually forward it, it iwll open in the forwarded message before you pres send.
If you forward the email from the shared mailbox, we found that it allows to open the PDF.
It is now listed in the Microsoft 365 admin center > Service Health.
Issue ID EX1015106
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It looks like there’s an ongoing issue with opening attachments in OWA Shared Mailboxes. Microsoft is aware of the problem and is working on a code fix. They expect to start deploying the fix by the end of Wednesday, February 26, 2025, and hope to resolve the issue by the end of Thursday, February 27, 2025