1. #1
    Unregistered

    Error code 646 when installing windows vista updates KB972363, KB973709

    Hi, iím trying to download and install windows updates available KB972363, KB973709 for my windows vista system, but while installing the updates iím getting the error code: 646 on screen and the installation stops in the middle. Any ideas, on how to resolve this issue??



  2. #2
    Support Array
    Join Date
    Apr 2012
    Posts
    1,574

    Re: Error code 646 when installing windows vista updates KB972363, KB973709

    1)This issue occurs, when window installer encounters an error!
    2)You need to install Microsoft Fixit to automatically update the affected registry keys in your system.
    3)To download the Fixit use the below link
    Fixit for vista updates
    4)Remember this Fixit would only work for the above mentioned updates errors. If you try to use this Fixit to other updates error issues, it won’t work
    5)Microsoft develops, Fixit for a specific error issues, This Fixit will only work for vista system only!
    6)Run the Fixit, then it will automatically resolves your system update issue
    7)Now, try to install the updates again, it work this time
    That’s it over!

    ~Support
    Community Manager

  3. #3
    Abiswal Array
    Join Date
    Aug 2013
    Posts
    55

    Re: Error code 646 when installing windows vista updates KB972363, KB973709

    Hi,

    ď1. Run the Microsoft Windows Malicious Software Removal Tool
    2. Download, install, update and run:
    SUPERAntispyware (freeware) and Malwarebytes' Anti-Malware (freeware).

    3. Run this online scan (in safe mode with networking, if possible):
    http://onecare.live.com/site/en-us/center/howsafe.htm

    If still no joy... see and follow carefully:
    "Checking for/Help with Spyware, Malware and Hijackware".Ē
    -Credit given to MVP Vincenzo Di Russo for these great antimalware options

  4. #4
    kumar12337 Array
    Join Date
    Sep 2012
    Location
    hyd
    Posts
    1,989

    Re: Error code 646 when installing windows vista updates KB972363, KB973709

    Hi, Dear friend,

    To fix the above error ..........follow these instructions

    press windows key+R and type regedit and click OK , YES

    Now navigate to HKEY_USERS\DEFAULT\Software\Microsoft\Windows\Curr entVersion\Explorer\User Shell Folders

    After that from the right pane double click on AppData and type the value data as %USERPROFILE%\AppData\Roaming and click the OK button

    Then close the Registry Editor ...and try to install the updates again

    And again if the same problem persists......simply navigate to the below paths ...and type the above value data that is %USERPROFILE%\AppData\Roaming

    HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Explorer\User Shell Folders
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Curr entVersion\Explorer\User Shell Folders

    After that it will be solved

    ALL THE BEST!!!!!!!!!!!!!!!!!!

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