Error code 646

Discussion in 'Windows Update' started by Lizdee, Jun 12, 2010.

  1. Lizdee

    Lizdee Guest

    I keep getting an error code 646 when trying to install these updates. HELP!!

    Security Update for the 2007 Microsoft Office System (KB982312)
    Security Update for Microsoft Office Excel 2007 (KB982308)
    Security Update for Microsoft Office InfoPath 2007 (KB979441)
    Security Update for Microsoft Office PowerPoint 2007 (KB982158)
    Security Update for Microsoft Office Word 2007 (KB982135)
    Security Update for the 2007 Microsoft Office System (KB982331)

    Installation date: ‎6/‎12/‎2010 9:44 AM
    Installation status: Failed
    Error details: Code 646
    Update type: Important
    Lizdee, Jun 12, 2010
    1. Advertisements

  2. Hello Lizdee,

    I can only post what others have tried and had some success with -

    Tony, posted what worked for him -



    just disconnect the network after downloading while the windows is
    installing if didn’t work just restart the computer and don’t connect to the
    internet, go back to the windows update and press install, because they will
    be already downloaded, and it will work (vista SP2)

    disconnecting from the 'net and rebooting worked. thanks!>


    Another user posted what worked for him

    <snip> close all office applications prior to the next install attempt.

    insert your office 2007 into the appropriate drive-bay prior to the
    next install attempt.

    close all open applications (i.e., anything with an icon on the taskbar).

    temporarily disable any third-party real-time system protections (e.g.,
    anti-virus; anti-spyware; firewall) prior to the next install attempt.

    reboot after an install attempt, whether prompted to do so or not.

    tip: if this is occurring in windows vista, disable user account control
    (UAC), install the updates, reenable UAC.



    If the OS is Vista and the update in question KB982331, as posted
    previously from a post by an MS Support Engineer in the
    social.answers.update forum:

    1. Turn off UAC. Don't just lower down the restrictions - turn it off
    2. Restart your computer for the change to take into effect.
    3. Re-download Security Update for the 2007 Microsoft Office System
    (KB982331) from the link below:>

    4. Install it.



    Here's 3 resolutions for Vista/Windows 7:
    1) Temporarily disable User Account Control. Install the updates,
    restart, reenable User Account Control.

    2) Install the updates with the Office CD already inserted into the
    CD/DVD drive.

    3) Open Windows Update in the Control Panel. Click the 'View updates
    history' link. Write down the KB number of the *failed* updates.

    Next, go here: Microsoft Download Center>

    Download the updates by searching for the KB number, save said updates.
    When you have them all, close Internet Explorer, and install them one at
    a time.
    NOTE: Be sure to download the updates intended for the architecture of
    the system. x86 (32bit) versions for x86 (32bit) systems; x64 (64bit)
    versions for x64 (64bit) systems.

    4) When the update in question is a *Security update*, such as
    MS10-031: Description of the security update for the 2007 Office system:
    May 11, 2010>
    then MS offers *no-charge support* in getting the update installed or
    troubleshooting compatibility issues:

    " How to obtain help and support for this security update

    For home users, no-charge support is available by calling 1-866-PCSAFETY
    in the United States and Canada or by contacting your local Microsoft
    subsidiary. For more information about how to contact your local
    Microsoft subsidiary for support issues with security updates, visit the
    Microsoft International Support Web site:>

    North American customers can also obtain instant access to unlimited
    no-charge e-mail support or to unlimited individual chat support by
    visiting the following Microsoft Web site:>

    For enterprise customers, support for security updates is available
    through your usual support contacts. "

    HTH !




    Please let us know what fixes the problem or if the pÑoblem remains

    Ǝиçεl, Jun 12, 2010
    1. Advertisements

  3. Lizdee

    MowGreen Guest

    That's all there is on this error code ... so far, Ǝиçεl. If I stumble
    over any others, I'll try to post it/them before I leave on "vacation".

    *-343-* FDNY
    Never Forgotten
    "Security updates should *never* have *non-security content* prechecked
    MowGreen, Jun 12, 2010
  4. Lizdee

    racenagain66 Guest

    racenagain66, Jun 12, 2010
  5. Lizdee

    briwilmul Guest

    Thanks guys!
    I disconnected from the network while the updates were being installed and
    the updates with error code 646 installed instantly. Thanks again!!

    briwilmul, Jun 13, 2010
  6. Hi Brian,

    Thanks for posting back.

    That's always a nice gesture when we get back a post indicating if the
    suggestions were helpful or not.

    Ǝиçεl, Jun 13, 2010
  7. Lizdee

    GWRider Guest

    I disabled my network adaptor, proceeded with the updates (They'd already
    been downloaded), and the installs finished without error.
    GWRider, Jun 14, 2010
  8. Lizdee

    damas7 Guest

    Solution for Windows 7 64 bits. OK, repair the Office 2007 (with CD or other
    meaning), probably near the end of the reparation it will give you an error
    telling that the Office could not acess to some key, the sign show what key,
    copy the key, open START next type regedit and next HKEY_LOCAL_MACHINE and
    make a serch to the key (last group of number) delete EXACTLY that key on the
    table of the right.

    Restart the PC and make the repair again it make the repair right until the
    end, it ask you to restart again, restart and use the windows update. Et
    damas7, Jun 17, 2010
  9. Lizdee

    Ramesh Asari Guest

    Recently we been receiving this error 646 while installing office 2007
    security updates. Few fixes like Disabling UAC on vista and installing the
    updates manually is a workaround solutions which surely defeat the purpose of
    the feature AUTOMATIC UPDATES in Windows OS.

    However, digging down the grave, this is a resolution i came across. Error
    646 in vista.. windows updates is trying to locate the location of a folder
    to load the updates prior to install. %APPDATA%

    Here is the permanent solution.

    1: Open registry editor
    2. Go to the location

    Navigate to the following registry keys
    Shell Folders

    The correct and default value for AppData should be:

    If not then change it. Then try windows update..

    Ramesh Asari, Jun 17, 2010
  10. Lizdee

    Haley Guest

    If your running Vista, disable user account control, download your updates.
    Remember to enable user account control after installing updates.
    Haley, Jun 19, 2010
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.