Code 641 and Windows Installer

Discussion in 'Windows Update' started by Gemma, Dec 28, 2007.

  1. Gemma

    Gemma Guest

    Im have been trying to download iTunes for a while now. When i get to a
    certain stage it says "Windows Installer cant be accessed". Also when i try
    to install some updates it wont download, just says, "Error code: code 641"
    Does anyone know how i can over come my problem??
    Gemma, Dec 28, 2007
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  2. Gemma

    PA Bear Guest

    Windows version? What updates?
    PA Bear, Dec 28, 2007
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  3. Gemma

    Gemma Guest

    Vista Home Basic. Update: Security Update for Microsoft XML Core Services 4.0
    Service Pack 2 (KB936181)

    Can you help??
    Gemma, Dec 28, 2007
  4. Gemma

    PA Bear Guest

    Tip: Temporarily disable real-time protection by your anti-virus and/or
    anti-spyware applications (e.g., CounterSpy, Spysweeper, Spybot, AVG
    Anti-Spyware) and/or any third-party firewall (e.g., ZA) before attempting
    to install the update(s).

    1. Can you install it manually? Save the download to your desktop then
    double-click on it to install:

    2. If no joy, see the Known Issues and "More information about..." sections

    As suggested on the above page:
    3. Or...

    Start > Run > copy and paste the below into the Open: line


    Click OK or press Enter

    Please post the msxml4-KB936181-enu.LOG in a reply to this thread.

    4. Or simply cut to the chase and...

    Start a free Windows Update support incident request:

    Support for Windows Update:

    For home users, no-charge support is available by calling 1-866-PCSAFETY in
    the United States and in Canada or by contacting your local Microsoft
    subsidiary. There is no-charge for support calls that are associated with
    security updates. When you call, clearly state that your problem is related
    to a Security Update and cite the update's KB number (e.g., KB123456).

    For more information about how to contact your local Microsoft subsidiary
    for security update support issues, visit the International Support Web

    For enterprise customers, support for security updates is available through
    your usual support contacts.
    PA Bear, Dec 28, 2007

  5. <cmd_output OS="XPsp2">
    F:\>set /a c = 0x641
    F:\>net helpmsg %c%

    The Windows Installer Service could not be accessed.
    This can occur if you are running Windows in safe mode,
    or if the Windows Installer is not correctly installed.
    Contact your support personnel for assistance.

    Try downloading the equivalent update and installing it manually?

    Good luck

    Robert Aldwinckle
    Robert Aldwinckle, Dec 29, 2007
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