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Powerpoint 365 - trusted location issue, cannot open mp4 without warning message

Roger Heirbaut 50 Reputation points
2023-07-30T20:36:28.29+00:00

I want to use a Powerpoint slide as a menu to open some video files. When I insert a link to an mp4 video, every time a popup warning 'some files can contain viruses etc .... be certain this file is on a trustworthy source' is displayed. Although the path is correctly added to the 'trusted locations' in the trust center. The video starts without a problem when I click 'OK' after the warning, but of course I want it to open without these warnings. And it is odd that I can insert a link to an mp3 file or a jpg file (which are located on the same path) and these files are opened without previous warning messages. I don't undertand, so if anyone can advise for this situation I would be grateful!

Microsoft 365
Microsoft 365
Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
4,039 questions
PowerPoint
PowerPoint
A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
236 questions
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  1. Emi Zhang-MSFT 22,796 Reputation points Microsoft Vendor
    2023-07-31T08:14:47.1066667+00:00

    Hi,

    I suggest you refer to this support article and check if the article is helpful:

    https://support.microsoft.com/en-us/office/powerpoint-cannot-insert-a-video-from-the-selected-file-acd46430-9e0c-4dca-9484-19cf0afdde7c

    If anything is unclear with the previous information I've provided to you, please don't hesitate to let me know.

    If the response is helpful, please click "Accept Answer" and upvote it.

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