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  1.    10 Feb 2015 #11

    Quote Originally Posted by TairikuOkami View Post
    Give it a try, 3 is Manual, 2 is Automatic service startup.
    Well, it didn't like me trying to change the value.
    Click image for larger version. 

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  2.    10 Feb 2015 #12
    Join Date : Feb 2014
    Posts : 7,152

    Try: Open an elevated Command Prompt and type: sc start WinDefend Enable and press Enter.
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  3.    10 Feb 2015 #13

    Quote Originally Posted by Edwin View Post
    Try: Open an elevated Command Prompt and type: sc start WinDefend Enable and press Enter.
    And my woes continue....

    This failed, per the response.
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  4.    11 Feb 2015 #14
    Join Date : Feb 2014
    Posts : 7,152

    Here's some more stuff you could try:

    I'm going to take it for granted that you get this: Click image for larger version. 

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ID:	12448 when trying to open the Defender applet in Control Panel. If not, check further.

    when you uninstalled MBAM, did you do it simply from Programs and Features?
    There's a small chance MBAM may have 'lynched' 1 or 2 Defender dll's.
    If so, try running their 'Cleanup Tool':

    Check this page for more alternatives:

    If all else fails, do a clean install!
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  5.    11 Feb 2015 #15
    Join Date : Nov 2013
    Posts : 4,272
    Win 10 Pro x64

    When I had that issue, I just simply reinstalled Win 10. It's not worth pulling your hair out trying to fix Win 10 issues like that. Maybe if it's a final version yes. But this preview keeps changing build after build. Even if you find a fix now, it may not be applicable with the final build later on. We never had this problem with Win 8. It's been over a week now. If it's fixable, it should have been fixed by now.
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  6.    11 Feb 2015 #16

    Quote Originally Posted by Edwin View Post
    If all else fails, do a clean install!
    I'll try the MBAM utility and if that doesn't work, I'll do a clean install with the next build.

    Thanks for you help!
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  7.    13 Feb 2015 #17

    I tried the MBAM Cleanup Tool and that didn't work. I'll wait for the new build this month and do a clean install.

    Thanks for all your suggestions.
      My System SpecsSystem Spec

  8.    30 May 2016 #18
    Join Date : May 2016
    Posts : 1

    Just signed up to say I managed to solve the problem an easy way without a reinstall.

    Had some of the above symptoms, but then remembered I'd disabled it in O&O Shut Up 10. Switched it back on in that program and all was well and I could re-enable it in control panel.

    So it may be that some 3rd party AVs use a 'back door' way to disable Defender permanently in the same way that O&OSU10 does, and a solution may be run that program and toggle it off and back on.

    Sorry to drag up an old topic but it comes up first in google results, and forums like these have helped me a lot so it's good to be able to contribute something back.
      My System SpecsSystem Spec

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