Windows 10: Windows Defender will not turn on *SOLVED*

Anonymous
2014-11-18T03:53:50+00:00

I had recently disabled windows defender on windows 10 and when I did I know want to enable it again but when I open action center and press Turn On Now it does nothing. I have pressed it multiple times and with no result.


Fix:

  1. press Windows Key + R
  2. type regedit
  3. locate the following path *HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS DEFENDER*
  4. Right Click this file and select permissions
  5. press Advanced
  6. where it says owner press change
  7. change the owner to your username
  8. Now press applythen ok
  9. select Full Controlfrom the permissions menu

(click the Widnows Defender folder)

  1. Find the value DisableAntiSpyware and DisableAntiVirus and set these values to 0

(explaination: double click each and where the 1 is put 0 and press ok)

  1. Open services.msc
  2. find Windows Defender
  3. there should be 2 services: Windows Defender Serviceand Windows Defnder Netwrok
  4. right click each and press start
  5. after you have started both restart your computer
  6. Run Windows Defend er

I Hope this Helps!

Feel Free to Reply

Windows for home | Windows 10 | Security and privacy

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Anonymous
2014-11-22T09:20:06+00:00

Fix:

  1. press Windows Key + R
  2. type regedit
  3. locate the following path *HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS DEFENDER*
  4. Right Click this file and select permissions
  5. press Advanced
  6. where it says owner press change
  7. change the owner to your username
  8. Now press apply then ok
  9. select Full Control from the permissions menu

(click the Widnows Defender folder)

  1. Find the value DisableAntiSpyware and DisableAntiVirus and set these values to 0

(explaination: double click each and where the 1 is put 0 and press ok)

  1. Open services.msc
  2. find Windows Defender
  3. there should be 2 services: Windows Defender Service and Windows Defnder Netwrok
  4. right click each and press start
  5. after you have started both restart your computer
  6. Run Windows Defend er

I Hope this Helps!

Feel Free to Reply

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72 additional answers

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  1. Anonymous
    2015-08-08T14:18:39+00:00

    LarrySheldon....I am interested what you learn on your call back.  Was Chatty Cathy L1 or L2 support (I never trust their L1, I just live through it until I get escalated)?  I have Webroot as my AV software.  When I finally lived through the drama of getting Defender installed and running, both are now working.  I know because periodically I get notifications that tell me both are running and that can cause slow downs.  Both applications show that they are on and have recent scan statuses and I don't perceive any slow downs or system problems.  Please let us know after your call if the Microsoft rep confirms Defender should not be used with any other AV?

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  2. Anonymous
    2015-08-08T14:08:31+00:00

    I just open it and while it is open, right-click on the entry on the task bad, select "pin to task bar".

    I think that works for any program.

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  3. Anonymous
    2015-08-08T12:07:18+00:00

    How to bring icon of "Windows Defender" in System Tray .It had come once but vanished.

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  4. Anonymous
    2015-08-07T20:25:27+00:00

    Yeah, it is "solved" alright.

    I just spent a long time with the chatty lady (forget the name she used) on case #1299471618.

    The short summary is:  Microsoft will NOT allow us to have third-party AV software under Windows 10.  If you DO install third-party software, that installation will stop Windows Defender from running (without giving you any warning or reason--it just won't run) and the OS will complain loudly about the fact that it is not running every few minutes, with no way to stop the complaints.

    I have confirmed on the two lap-tops here that removing F-Prot and Spybot--Search and Destroy will allow Windows Defender to run, doing what ever it does.

    Where I am between the hammer and the anvil on this machine is that I broke something trying to "fix" the unfixable and it won't run even with the third party stuff removed.

    I have an call appointment to see if that can be fixed.

    Bah!

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