Attachments in Shared Mailboxes won't open, preview or save.

Anonymous
2025-02-25T08:12:30+00:00

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?

Outlook | Windows | New Outlook for Windows | For home

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  1. Anonymous
    2025-02-26T15:01:06+00:00

    Im seeing 404 Error too and cannot find the post in admin portal. Have you any luck?

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  2. Anonymous
    2025-02-26T14:51:34+00:00

    It seems the regular mailbox works, so as a work around i have the client forward the email to their inbox and the pdf will open. Thats if you dont want to migrate to the classic outlook.

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  5. Anonymous
    2025-02-25T19:29:32+00:00

    Thanks for this. We have a client this is heavily affecting, but I can no longer find this issue in the service alerts. Does anyone have an updated link so I can follow it or get notified?

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