Getting 0x8024400a error when attempting to update Windows Defender Beta 2.

Posted on 2006-05-15
Last Modified: 2012-06-21
I get a 0x8024400a error when I try to update Windows Defender Beta 2.  It will not go out and grab new definitions.  
Question by:ispexpert
    LVL 97

    Expert Comment

    Greetings, ispexpert !

    Open the command prompt
    Go to C:\Program Files\Windows Defender\ folder
    Execute the following command: msiexec /x AS_Sigs.msi

    As a workaround, use Microsoft Update ( and it presented the
    Windows Defender update when you select the "Custom" update.

    Best wishes!

    Author Comment

    When I run AS_Sigs.msi it asks me if want to uninstall the program.  
    LVL 97

    Expert Comment

    Select "No" if asked to uninstall program.

    This a Windows Update issue.  Go to the Windows Update site and download Windows Defender updates from the Custom tab.

    Author Comment

    I agree because I get an error every time I try to go to Windows Update as well.  After clicking on the Custom button, here is the error I get.

    The website has encountered a problem and cannot display the page you are trying to view. The options provided below might help you solve the problem.
    LVL 97

    Accepted Solution


    Delete your Temporary Internet Files and History, then delete the configuration files from the WindowsUpdate folder. Then add Windows Update to the Trusted Zones Site.  Make sure your system time and date is correct.

    Start > Run and type regsvr32 MSXML3.DLL
    Do the same for

    Windows Update Trouble Shooter
    LVL 97

    Expert Comment

    ispexpert, any udpate?

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