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  1. #1
    New Lounger
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    When trying to load security essentials on this one PC that I have I get the following error when trying to update the dat files: error code: 0x80072efe,
    error description: Microsoft security essentials couldn't install the definition updates please try again later?
    I installed the program straight from Microsoft web site. Anyone have an idea, Thanks
    Liam

  2. #2
    5 Star Lounger
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    Make sure the computer date is current and maintaining itself.

  3. #3
    3 Star Lounger
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    Security Essentials is just echoing a Windows Update error code. There’s an Online Help article that explains this in “Top support topics” (Error “0x8*******” encountered while virus and spyware definition updates or product upgrades).

    If Step 2 in this procedure doesn’t yield any results, you can refer to this Knowledge Base article (for Windows XP):

    http://support.microsoft.com/kb/883821


  4. #4
    Administrator
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    That error code indicates a lost internet connection. See You may encounter temporary connection-related errors when you use Windows Update or Microsoft Update to install updates for some possible help.

    NOTE: ignore the title of the article.

    Joe
    Joe

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