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
    2025-02-25T09:16:11+00:00

    Me too. Only with shared mailboxes. My own mailbox works fine.

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  2. Anonymous
    2025-02-25T09:22:59+00:00

    I also have a customer with the same issues

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  3. Anonymous
    2025-02-25T11:16:54+00:00

    We've seen this issue this morning, Microsoft have posted on their health page about it: https://admin.microsoft.com/Adminportal/Home/servicehealth/:/alerts/EX1015106

    As a workaround, we've found that the old version of outlook is not affected and you can access images and download them fine through that, so as a workaround, we are migrating certain users back to old outlook as a workaround.

    Doesn't bode well for new outlook tbh!

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  4. Anonymous
    2025-02-25T11:56:57+00:00

    We can't seem to open some files like jpeg, pdf, in shared mail boxes.

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  5. Anonymous
    2025-02-25T16:36:19+00:00

    That link gives a 404 error. I am not seeing this posted in the Admin portal that they are working on it?

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