Windows update fails with error code 0x643

Anonymous
2009-10-14T15:22:25+00:00

I have downloaded the recent Microsoft updates and all but one installed successfully.  The failing update was:  Microsoft .NET Framework 1.1 Service Pack 1 Security Update for Windows 2000, Windows XP, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 (KB953297);

with an error code of  0x643.

We tried several times to install it and it keeps failing.  It was originally the 3rd update in the list to install.  After failing the first time, it was the only one we were trying to install.  We tried it after the restart required for the other updates.

Windows for home | Previous Windows versions | Windows update

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  1. Anonymous
    2009-10-14T06:27:27+00:00

    i got an error installing the framework 1.1 with an error code of 643 "WindowsUpdate_00000643" "WindowsUpdate_dt000" how do i fix it because that other stuff i tryed don't work

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  2. Anonymous
    2009-10-09T02:16:13+00:00

    Hello Doug,

    Thank you for writing back to  Microsoft Vista Community Forums.

    First, try to create a System Restore Point manually, so that in case, something goes wrong while performing these steps, you may always perform a System Restore.

    You may access the link below and try to uninstall all the versions of the .NET Framework on the computer, and then reinstall all the versions of the .NET Framework on the computer.

    http://support.microsoft.com/kb/923100

    Hope it helps.

    Regards,

    Srinivas

    Microsoft Answers Support Engineer

    Visit our Microsoft Answers Feedback Forum and let us know what you think

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  3. Anonymous
    2009-09-01T13:30:50+00:00

    I'm getting the same problem with this upgrade.  I've also tried the recommended solution but it didn't work for me either. I read somewhere that the solution is to remove .NET Framework 1.1 and re-install it because maybe the problem with the )+SP upgrade is a corrupt file in the original program - but I've not tried this because I'm afraid of causing some other problem or freezing my system somehow (or that I won't be able to find the original file anymore since 3.5 is out). It's the only upgrade I've had problems with (and I just downloaded 98 because I just upgraded). If anyone has a solution, I'd appreciate it.

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  4. Anonymous
    2009-08-29T15:46:35+00:00

    I downloaded the update KB929729 Anny it was 8,802kb. Then I went through the process of using msconfig for a clean boot, rebooted, clicked on the download and said yes a couple of times and I presume it started as I got no further messages and nothing showed up in the update log. Afte about an hour and the system was quiet as I determined from Task manager, I rebooted and then set the system back to normal via MSCONFIg, rebooted again and triede to install the failed update and received the same error.  "ERRORS FOUND CODE 643 WINDOWS UPDATE ENCOUNTERED AN UNEXPECTED ERROR".

    Regards other updates, I've not has any more since this attempt, but I have received others after trying to put on the Net 1.1 fix and they go on ok. None though are NET fixes I do not think.

    So...now what?

    Thanks for the help too.

    Doug

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  5. Anonymous
    2009-08-26T23:42:09+00:00

    Hi Doug,

    Thank you for posting to Microsoft Answers Community Forums.

    Try to download the standalone version of the update and save it to the desktop and try to install the install the same after putting the computer in a clean boot state.

    Link to download the update KB929729:

    http://www.microsoft.com/downloads/details.aspx?FamilyId=7EEA368D-7B82-4583-8537-30351718A4E9&displaylang=en

    To perform a clean boot on a computer that is running Windows Vista:

    1. Click Start, type msconfig in the Start Search box, and then press ENTER.

     If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.

    1. On the General tab, click Selective Startup.
    2. Under Selective Startup, click to clear the Load Startup Items check box.
    3. Click the Services tab, click to select the Hide All Microsoft Services check box, and then click Disable All.
    4. Click OK.
    5. When you are prompted, click Restart.
    6. After the computer starts, try to install the updates.

    If your issue is resolved after performing Clean Boot and then installing the update, then follow the steps on how return your computer to a Normal startup mode by following the steps under “Reset the computer to start as usual” in the following KB article: http://support.microsoft.com/kb/929135

    You may also try to restart the computer in safe mode and try to install the standalone version of update KB929729. To start the computer in safe mode restart the computer and keep tapping F8 key. Once you see the option safe mode select it and press enter.

    If the issue persists, let us know if you are able to install other updates apart from Microsoft .NET Framework, Version 1.1 Service Pack 1 (KB929729).  Also let us know the exact error message you receive when the installation fails.

    Hope it helps.

    Regards,

    Srinivas

    Microsoft Answers Support Engineer

    Visit our Microsoft Answers Feedback Forum and let us know what you think

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