Outlook 1.2023.425.600, how do i change the default PDF

Robert Pham 0 Reputation points

how do i change the default PDF viewing program on outlook in it's latest version?

I use to be able to use Revu Bluebeam but can no longer use it on this new version.

A family of Microsoft email and calendar products.
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  1. S.Sengupta 7,586 Reputation points MVP

    Within Microsoft Outlook, go to "File" menu and click "Options".

    Select the "Trust Center" link.

    Click on the "Trust Center Settings..." button.

    Select the "Attachment Handling" menu.

    Click on the "Attachment and Document Previewers..." button.

    Locate the "PDF PreviewHandler" option from the "File Previewing Options" list, related to the program that you have installed that Outlook is currently using to preview file.

    Right-click the PDF, choose Open With > Choose default program or another app in.

    Select Always use this app to open .pdf files.

    Click OK.

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  2. Faery Fu-MSFT 9,321 Reputation points Microsoft Vendor

    Hi @Robert Pham ,

    Currently, the new Outlook does not support the ability to open .pdf files in your preferred third party app, you can switch back to the classic Outlook at any time by clicking the toggle button in the top right corner of the window.

    The new Outlook is not yet complete, and some options may not be available or work as expected. Many features of our current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future, and you can make a suggestion via this link

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