Windows 10: "Class not registered" error when opening MP4s

Discus and support "Class not registered" error when opening MP4s in Windows 10 Software and Apps to solve the problem; Whenever I try to download an MP4 and play it, it gives me an error saying "Class not registered". On File Explorer, it lists the file type as "Media... Discussion in 'Windows 10 Software and Apps' started by MTT MTT, Aug 26, 2024.

  1. MTT MTT
    MTT MTT Win User

    "Class not registered" error when opening MP4s


    Whenever I try to download an MP4 and play it, it gives me an error saying "Class not registered". On File Explorer, it lists the file type as "Media Player". I think this may have something to do with all of my image files png, SVG, jpeg, etc. being referred to as "paint.net File" and the photo icon being replaced with the paint.net logo. Any fixes that don't resort to resetting the computer entirely?

    :)
     
    MTT MTT, Aug 26, 2024
    #1
  2. RIEL ALC
    Riel Alc Win User

    "class not registered" error

    Hi Eddie,

    For better assistance, are you getting the error with this specific file only?

    We suggest checking this thread to resolve the "Class not Registered"
    error.

    We're looking forward to your reply.
     
    Riel Alc, Aug 26, 2024
    #2
  3. WJANEFW
    WJaneFW Win User
    Class not registered error

    I ran the scan as suggested. No errors were found. I continue to receive the "class not registered" error when I try to open a JPEG file.
     
    WJaneFW, Aug 26, 2024
    #3
  4. STAPLETO
    stapleto Win User

    "Class not registered" error when opening MP4s

    Class not registered error

    So how do I (we) fix this problem?
     
    stapleto, Aug 26, 2024
    #4
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"Class not registered" error when opening MP4s

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