error code 641

Discussion in 'Windows Update' started by Cassie, Jul 23, 2007.

  1. Cassie

    Cassie Guest

    When I try installing my new updates, I get error, code 641. Not sure what
    the error means. The update that trys to install is: Security update for framework version 1.1 service pack 1. How do I solve this
    Cassie, Jul 23, 2007
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  2. Use Method 2 on this page:

    Error message when you try to install the .NET Framework 1.1 Service
    Pack 1 Update from the Windows Update site on a Windows XP-based
    computer: "Updates were unable to be successfully installed"

    MowGreen [MVP 2003-2007]
    *-343-* FDNY
    Never Forgotten
    MowGreen [MVP], Jul 23, 2007
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  3. Cassie

    Cassie Guest

    Thanks for the help.. but it didn't work.. when i tried to use the cleanup
    utility.. it says:this product is already installed as part of the operating
    system. Now what can I try?

    Cassie, Jul 23, 2007
  4. Cassie

    Sliverman Guest

    get dotnetfx.exe from microsoft and run it click repair then repeat
    getting the update from microsoft.
    Sliverman, Jul 23, 2007
  5. Is the Operating System Windows Media Center ?

    How to repair the .NET Framework 1.0 that ships as part of the OS on
    Media Center and Tablet PC

    MowGreen [MVP 2003-2007]
    *-343-* FDNY
    Never Forgotten

    MowGreen [MVP], Jul 24, 2007
  6. Cassie

    Cassie Guest

    Yes.. I think... I am now currently running Windows Vista... And on the dell
    that I am using.. Yes.. I have windows media center..
    what can I try next?
    thanks for the help..

    Cassie, Jul 24, 2007
  7. Vista ships with .NET Framework 3.0 . So the instructions on that page
    may not be relevant.
    Apparently some older software requires .NET Framework 1.1 in order to
    for it to run and you've installed that version. See if you can Repair
    it from within Add/Remove Programs in the Control Panel.

    Locate it in ARP and check the options that are available. If there's a
    Change option, use that to Repair it.
    One reason why the update will not install is due to interference from
    antivirus software. Completely disable the installed AV from actively
    monitoring the system and see if that helps in getting the update
    installed, Cassie.

    MowGreen [MVP 2003-2007]
    *-343-* FDNY
    Never Forgotten

    MowGreen [MVP], Jul 25, 2007
  8. Cassie

    Cassie Guest

    Okay... I went to the control panel and tried to remove that, but nothing
    happened... I tried to install that update today and I got a different
    error.. I got error 643 this time!!! What the heck is going on with this darn

    Cassie, Jul 26, 2007
  9. error 643 is a generic one and is not helpful in trouble shooting why
    the update will not install. *Strongly suggest* you use the steps on
    this page to remove .NET Framework 1.1:

    Then download a fresh copy of it and SAVE it.
    Then download the update from here and SAVE it:

    After the downloads have been completed close the browser and any other
    open programs.
    DISCONNECT the system from the internet if it's on broadband.

    *** Completely disable the installed antivirus software either by
    reading the product's Help file or by consulting it's web site. ***

    Install .NET Framework 1.1
    Restart the system if requested to
    Now install KB928366 [ NDP1.1sp1-KB928366-X86.exe ]
    Restart the system if requested to

    REENABLE the installed antivirus software and then reconnect the system
    to the internet.

    MowGreen [MVP 2003-2007]
    *-343-* FDNY
    Never Forgotten

    MowGreen [MVP], Jul 26, 2007
  10. Cassie

    PA Bear Guest


    When you try to install an update for the .NET Framework 1.0, 1.1, or 2.0,
    you may receive Windows Update error code "0x643" or Windows Installer error
    code "1603":

    PA Bear, Jul 26, 2007
  11. Cassie

    Cassie Guest

    This helped.. Thank you so very much!!!

    Cassie, Jul 27, 2007
  12. There's one little problem with that KB ... if the .NET Framework
    version can't be uninstalled from ARP or the Windows Installer Cleanup
    Utility doesn't show it being installed, BroRo <w>
    Cassie appears to have overcome that small obstacle ... hopefully.

    MowGreen [MVP 2003-2007]
    *-343-* FDNY
    Never Forgotten
    MowGreen [MVP], Jul 27, 2007
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