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Thread: Windows Defender error 0x800106ba

  1. #1
    Bquinn Guest

    Windows Defender error 0x800106ba

    12/11/2007

    Long post, sorry.
    Desktop computer with new clean install of Vista Ultimate about 15 Oct 2007.
    Everything else works. Tried to open and to start to run Windows Defender
    in order to scan my disks and got a message something like this:

    Application failed to initialize : 0x800106ba. A problem caused this
    program service to stop. To start the service, restart your computer or
    search Help and Support for how to start a service manually. Did the
    restart, however IT DID NOT CORRECT THE START PROBLEM of Windefend. I went
    to services to try to start it manually by right clicking on the WinDefend
    and selecting start. The message received was:

    Windows Defender could not be started.
    System error 2 has occurred
    The system can not find the file specified svchost.exe in the Windows
    System32 folder.

    I checked to insure that the file was in the system32 folder. It was.

    Check Google and one fellow said that the command: 'net start windefend'
    worked for him. I typed the command: 'net start windefend' and got the
    following messages:

    The Windefend service is starting and then
    The Windefend service could not be started
    A system error has occurred
    System error 2 has occurred
    The system cannot find the file specified

    Went to the MS download site and downloaded new Defender program and tried
    to install the program over the installed version. Received this message
    when starting the install - "You do not need to install this software
    because Windows Defender is included in Windows Vista. You can access
    Windows Defender from the Security Section of the Control Panel.

    Went to Control Panel - Programs and Features - Uninstall or Change a
    program, but Windows Defender was not listed. I guess it was not listed
    since it was included in the release of Vista. Went to msconfig and
    disabled all services and rebooted. Used the command 'net start windefend'
    and got the same system 2 error answer. Computer still operates with no
    other problems noted. I wonder if my security program "Avira Premium
    Security Suite" is blocking the Defender? It shouldn't be true since I
    stopped all services and got the same error.

    Any suggestions are welcomed. Thanks.

    Bill Quinn


  2. #2
    Engel Guest

    RE: Windows Defender error 0x800106ba

    Hello Bquinn,

    I quote dean รข€“ dean --a regular contributor here:

    You might try this. Go to the main Windows Update window and
    click on "Installed Updates" (on the left-hand side of the window, at the
    bottom), and then remove "Update for Microsoft Windows (KB931099)" (only).
    Reboot. Reboot again. Go back to Windows Update, and re-install the same
    update, by clicking on the Check for Updates button.
    This should essentially re-install Windows Defender on Vista.

  3. #3
    Bquinn Guest
    Thank you Engel for your help. Did the uninstall of KB931 099 update as
    outlined in your message, rebooted two times, and then ran the update
    program which did reinstall the KB931 099 and KB915 579.

    I still get those same error messages so the Defender is not fixed. Since
    the computer is running OK with those problems maybe I should stop trying to
    fix it --- or should I say live with it.

    Again thanks for you help and interest.

  4. #4
    kiwi Guest

    Re: Windows Defender error 0x800106ba

    Hi Bill,
    I know you posted a long while ago......but I have the same issues with
    an OEM loaded Vista 64 on a laptop I purchased some 6 months ago.
    Looking for a fix is driving me mad! Tried so many things.
    Thinking of giving up on Windows Defender....unless u were able to find
    a fix??

  5. #5
    Engel Guest

    RE: Windows Defender error 0x800106ba

    See here:

    http://www.microsoft.com/communities...p=1&sloc=en-us

    Event Viewer - Windows Vista features a unified event log so that a support
    professional can view all the operational information about a machine from a
    single Event Viewer.

    <http://www.microsoft.com/downloads/details.aspx?familyid=FDE1C060-CF5F-4B62-B985-6BF494F42EF9&displaylang=en>

    Windows Defender - Windows Defender works with Internet Explorer 7 to help
    you make conscious choices about software installed on your PC by providing
    always-on protection that monitors key system locations, watching for changes
    that signal the presence of unwanted spyware.

    <http://www.microsoft.com/downloads/details.aspx?FamilyID=c32ecf20-ea7c-489b-8d66-fde0606de2ad&DisplayLang=en>

  6. #6
    Join Date
    Feb 2009
    Posts
    1

    Re: Windows Defender error 0x800106ba

    I had the same issue after I installed Mcafee. After contacting Mcafee tech support I found out that there was a conflict with Internet Explorer 8Beta. Removing the Internet Explorer 8Beta from my Windows XP computer corrected the issue. But the computer with Vista kept having the same error. I followed the steps that romieb69 wrote. After the computer restarted the first time the issue was resovled. Thank you all for your posts!

  7. #7
    mlt503 Guest

    Re: Windows Defender error 0x800106ba

    This may be a bit late but I experienced the same problem on my Toshiba
    laptop running Vista Home / 32 bit OS.
    I tried all the solutions online but nothing helped fix the irritating
    0x800106ba error that Defender would put up when I tried to launch it
    using the icon in Control Panel.
    The fix that worked for me was to go to Start/Control
    Panel/Administrative Tools/Services.
    I found Windefend (or Windows Defender) and left-clicked, then
    right-clicked to bring up the pull-down menu. Clicked on Properties and
    changed the status from manual to automatic!
    I re-booted TWICE (because it was advised on one of the forums) and
    it's running fine now.
    Now if your Defender is already set to automatic and you're seeing the
    same error, I would change it to manual, go thru ALL the above steps
    (and try not to be too impatient) and then change it to automatic,
    reboot twice and see what happens.
    As a side note, my version of Vista won't allow un-installing Update
    KB931099 to fix this problem.
    Keep trying, the great feeling you get when you troubleshoot this
    successfully may be the highlight of your day.

  8. #8
    FlorenceTG Guest
    I gotta tell you

    I had been dealing with this problem for months and I have googled,
    uninstalled, etc....to no help

    I did exactly what you said and POW! It is gone

    it made my day to hear you fixed it!! You go Girl!
    And it's a pleasure giving back after receiving so much help from this
    forum.

    Thank you so much! I thought it was a McAfee conflict since it seemed
    to start after I installed McAfee. Your solution worked the first time!

    This same process worked for me too running Windows Vista. Thanks for
    posting this info!!

    Since I was getting the message at Windows Login, I didn't have to boot twice. First time in it was gone. My OS is Vista Business.

    THANKS again.

  9. #9
    Join Date
    Jun 2009
    Posts
    1
    Thanks for your post

    How'd you come up with this fix?! You're the best man!
    Thanx a lot! :)

    This doesn't work for me cause that there are no updates related to
    Defender in my list of updates. Please advise as this issue has cost me
    too much frustrating time... Thanks... :)

  10. #10
    doulos737 Guest
    Thanks so much Mark! This is the only suggestion that worked for me
    after wasting so much time trying many things. I appreciate your
    contribution as well as those of all others though they didn't work for
    me.

    The confusion thing is, how did the problem get intoduced. I didn't
    change the service setting to 'manual' and it used to automatically run.
    Also, since it was now somehow set to manual, then why was I getting the
    error upon start up, unless cause it was in the Start up task list and
    then there was a conflict with the 'manual' service setting... Oh
    well... Thanks again... :)

  11. #11
    Join Date
    Jul 2009
    Posts
    1
    Every time i startup my laptop, it comes up with the 0x800106ba error message.
    I recently connected it to my HD TV, ever since then the internet, sound, windows installer, windows security are not working. I have tried uninstalling windows defender, but it doesn't appear in the remove programs list, i have tried changing it in the bootup menu (automatic0, with no luck.

    Any help would be greatly appreciated.

    Looking for the steps that romie69 listed, but can'tfind them. Can you point me in the right direction?

  12. #12
    Jeff Guest

    Re: Windows Defender error 0x800106ba

    Thanks. This worked for me too. This is the first time I have used Windows
    Live for a fix. I will use it again now that I have found that it works. I
    have a 64 bit system, but it worked just the same. Thanks Again...

  13. #13
    Rach Guest
    It worked first time and I only had to reboot once.
    System is running perfectly and Defender immediately did a scan to check all
    is well.

    Your solution effectively got rid of the niggling problem on my Acer

    I had the same problen and You solved it for me - I rebooted just
    once after changing to automatic - just as you described - you really
    made my day.

  14. #14
    yonniemac Guest

    Re: Windows Defender error 0x800106ba

    in properties where did you change form manual to auto

  15. #15
    Join Date
    Aug 2009
    Posts
    1

    Re: Windows Defender error 0x800106ba

    Quote Originally Posted by mlt503 View Post
    This may be a bit late but I experienced the same problem on my Toshiba
    laptop running Vista Home / 32 bit OS.
    I tried all the solutions online but nothing helped fix the irritating
    0x800106ba error that Defender would put up when I tried to launch it
    using the icon in Control Panel.
    The fix that worked for me was to go to Start/Control
    Panel/Administrative Tools/Services.
    I found Windefend (or Windows Defender) and left-clicked, then
    right-clicked to bring up the pull-down menu. Clicked on Properties and
    changed the status from manual to automatic!
    I re-booted TWICE (because it was advised on one of the forums) and
    it's running fine now.
    Now if your Defender is already set to automatic and you're seeing the
    same error, I would change it to manual, go thru ALL the above steps
    (and try not to be too impatient) and then change it to automatic,
    reboot twice and see what happens.
    As a side note, my version of Vista won't allow un-installing Update
    KB931099 to fix this problem.
    Keep trying, the great feeling you get when you troubleshoot this
    successfully may be the highlight of your day.
    Changing windows defender to automatic in administrative tool/services and rebooting worked for me. Thanks! Using Windows Vista Home Premium on Acer Aspire with McAfee.

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