I cant install the updates for .NET framework 4 RRS feed

  • Question

  • Everytime I try to install the updates for windows update I get the error message 643 regarding the >NET Framework 4 for my Vista 32 bit program. I have tried several times and cant get it to install...What do I need to do?
    Sunday, August 21, 2011 9:56 PM


  • Hi Summer,


    Welcome to the MSDN forum.


    First, could you please let me know which update you failed to install?


    Second, have you tried Faraz’s suggestions?


    Third, I recommend you open Control Panel>>Uninstall a program>>View installed updates>>Check if the update you tried to install is displayed here. If it is listed here, I recommend you try to uninstall by right clicking. After you uninstall it, please reboot. Then try to download it from:

    Before you begin to install it, I recommend you clean up %temp% folder and disable all the antivirus and antispyware (please make sure they are turned off during the installation). Finally, right click the setup file and select “Run as administrator”.


    If it still failed after these steps, I recommend you collect the Windows Update log. You can take a look at this article to find log:


    If you have any other concerns, please feel free to let me know.


    Best Regards,

    Alexander Sun [MSFT]
    MSDN Community Support | Feedback to us
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    Please remember to mark the replies as answers if they help and unmark them if they provide no help.

    • Marked as answer by Alexander Sun Monday, August 29, 2011 3:21 AM
    Tuesday, August 23, 2011 9:09 AM

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