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Windows defender

    Question

  • When I try to do anything with Windows Defender, I get a dialog box saying "The application failed to initialize: 8x80070006. The download handle isinvalid." I have tried to download and reinstall WD, but always receive the message stating that WED is already a part of the security suite. How can I repair or reinstall WD so that I can use it?
    Monday, July 04, 2011 4:41 PM

Answers

  • When I try to do anything with Windows Defender, I get a dialog box saying "The application failed to initialize: 8x80070006. The download handle isinvalid." I have tried to download and reinstall WD, but always receive the message stating that WED is already a part of the security suite. How can I repair or reinstall WD so that I can use it?


    Windows Defender is part of your operating system. It cannot be uninstalled or re-installed.

    Windows Defender will be shut down if you have one of the following security programs installed :
    MSE - Microsoft Security Essentials
    AVG
    McAfee
    Norton

    Those programs have their own defenders. Running 2 defenders in the same machine will create conflicts. That is why they will turn off WD.

    Tell us what " anything " you want to do with Windows Defender. Maybe there is another way.


    If it solves your problem, I did it. If it does not, my twin brother did it.
    Monday, July 11, 2011 5:23 AM

All replies

  • What "security suite" do you have installed?
    Carey Frisch
    Sunday, July 10, 2011 5:59 AM
    Moderator
  • When I try to do anything with Windows Defender, I get a dialog box saying "The application failed to initialize: 8x80070006. The download handle isinvalid." I have tried to download and reinstall WD, but always receive the message stating that WED is already a part of the security suite. How can I repair or reinstall WD so that I can use it?


    Windows Defender is part of your operating system. It cannot be uninstalled or re-installed.

    Windows Defender will be shut down if you have one of the following security programs installed :
    MSE - Microsoft Security Essentials
    AVG
    McAfee
    Norton

    Those programs have their own defenders. Running 2 defenders in the same machine will create conflicts. That is why they will turn off WD.

    Tell us what " anything " you want to do with Windows Defender. Maybe there is another way.


    If it solves your problem, I did it. If it does not, my twin brother did it.
    Monday, July 11, 2011 5:23 AM
  • Hi Davidhk129, you said..

    Windows Defender will be shut down if you have one of the following security programs installed : MSE - Microsoft Security Essentials AVG McAfee Norton

     

    In fact here I have MSE(defender) running quite happily with Mcafee Security Centre and also Iobit Malware fighter. And any one of them could prompt me during real time scanning of files. And all three can be triggered to start a virusScan on the drive. Though I've NOT tried to deliberately Scan with ALL 3 at once as likely the disk/CPU would stall..

    Yeah sure they might complain initially - but if you're determined it IS possible!

    pkn2011

    Monday, July 11, 2011 11:57 PM
  • Hi Davidhk129, you said..

    Windows Defender will be shut down if you have one of the following security programs installed : MSE - Microsoft Security Essentials AVG McAfee Norton

     

    In fact here I have MSE(defender) running quite happily with Mcafee Security Centre and also Iobit Malware fighter. And any one of them could prompt me during real time scanning of files. And all three can be triggered to start a virusScan on the drive. Though I've NOT tried to deliberately Scan with ALL 3 at once as likely the disk/CPU would stall..

    Yeah sure they might complain initially - but if you're determined it IS possible!

    pkn2011


    The only person I have interest in replying to is the OP.

    You are not it.
    You have issue with my answer, bring it to the Moderator, in this case Magon Liu.


    If it solves your problem, I did it. If it does not, my twin brother did it.
    Tuesday, July 12, 2011 4:31 AM
  • when I said,

    Yeah sure they might complain initially - but if you're determined it IS possible!

     

    Just for the record. And for informational purposes: As snapped from my startup file, (and hopefully not instigating any re-occurrence of further sour grapes by any other participant(s) herein) I post the following: Vista 32bit Business. 4gb DDR2  @2Ghz dual cpu.

    -------booted tasks (among others)

    Yes   HKLM:Run Windows Defender       %ProgramFiles%\Windows Defender\MSASCui.exe -hide

    Yes   HKLM:Run mcui_exe        "C:\Program Files\McAfee.com\Agent\mcagent.exe" /runkey

    Yes   HKLM:Run IObit Malware Fighter  "C:\Program Files\IObit\IObit Malware Fighter\IMF.exe" /autostart

    -------

    pkn2011

     

    Friday, July 15, 2011 9:54 PM
  • In Addition:

    As extracted from a message posted by me in Vista Applications re: starting Defender..

    ----------------------

    Check processes running from task Manager for the file MSASCui.exe (defender Interface) on the path "C:\Program Files\Windows Defender\MSASCui.exe"

    If it's running go to that path and create a shortcut for defender from it..

    If it's NOT running - go to the same path and both create shortcut and also Run the shortcut/or the MSASCui.exe

    ----------------------

    And Further as found in same thread in Vista Applications: ie. 'Fixing "0x800106ba" Vista Windows Defender'

    Go into services to check that Defender Service  "WinDefend" is set to Automatic.

    If it isn't - trying to run defender when defender is already running will cause the abovementioned error.

     

    Regards, pkn2011

    • Proposed as answer by pkn2011 Saturday, August 06, 2011 4:42 AM
    Saturday, July 16, 2011 2:27 AM
  • How did you turn on Defender with MSE running? I have Vista Ultimate 64bit and have now installed MSE. While I like it I want Defender back for nerdy reasons. I also like to run quick scans regularly along with dinking in my registry and startup files from there. I really don't want to run AVG as its slow and lanky on my machine. So tell me how to get WD running agan on my PC. It runs both fine on XP but not Vista. Runs swmmingly with Kaspersky but my subscription bit the bullet and I can't afford another 65 clams for Kaspersky subscription again.
    Monday, August 15, 2011 8:01 AM
  • Hi you said.. "How did you turn on Defender with MSE running?"

     

    If you do install MSE on vista it'll take over the front end from Defender, Like it does on the Win7. Although it's there as a background process on call for MSE (and if you really want to you CAN get it running. I proved that one day here in fact - even updated Defender with MSE running) but what David said in regard to MSE and Defender is basically correct.

    The following is what I determined at the time. (Never posted)

    In regard to doing similarly on Win7 64bit - It IS possible to run the well hidden amd64 version of Defender as I have detailed for Vista in previous messages - together with Mcui & imf and also msseces.exe surprisingly. You can even update Defender thru its interface (if you first disable Windows Update).

    BUT - to allow MSASCui.exe to maintain control of the WinDefend service you'd really need to remove msseces.exe from bootup, which likely isn't a very forward thinking idea..

    --

    So only one or the other can control the "WinDefend" service at any one time.

    Regards, pkn


    If my post was helpful - give it a Vote. If it helps solve your problem - propose it as Answer. ;-)
    Monday, August 15, 2011 9:55 AM
  • I ALSO HAVE WIN DEFENDER ISSUES AND RUN NORTON SHOULD I CLOSE DOWN NORTON, I AM TRYING TO STOP SOME PROGRAMS FROM RUNNING ON STARTUP AND WAS DIRECTED TO WIN DEFENDER....FIVECARDS5
    Tuesday, June 12, 2012 9:00 PM
  • NORTON THROUGH COMCAST

    Tuesday, June 12, 2012 9:01 PM
  • There are two ways to disable programs at startup. If defender isn't working then use MSConfig.exe.
     
    Click Start - All Programs - Accessories - Run and type
     
    msconfig
     
    Then go to the Startup tab.
    --
    .
    --
    "FIVECARDS5" wrote in message news:eae6b4d8-6fc3-4f77-91e3-cbb3373dc21e...
    >I ALSO HAVE WIN DEFENDER ISSUES AND RUN NORTON SHOULD I CLOSE DOWN NORTON, I AM TRYING TO STOP SOME PROGRAMS FROM RUNNING ON STARTUP AND WAS DIRECTED TO WIN DEFENDER....FIVECARDS5
    Wednesday, June 13, 2012 8:04 AM