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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Answer accepted by question author
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
    2015-09-14T17:39:15+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

    ...not allowed to change values to 0 in disable spyware and antivirus

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  2. Anonymous
    2015-09-04T17:12:57+00:00

    I was able to fallow the steps up to Windows Defender. Permissions folder. Any suggestions?

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  3. Anonymous
    2015-09-01T00:50:27+00:00

    Now that I can see 3 other comments (about Windows 10 not allowing third party Anti Virus) I see I only have one of the two I run and I don't think it is working properly.  How do I get Microsoft to fix this?

    I don't know--I gave up.

    The folks that bought F-Prot do not seems to care, so I scrapped it--Windows Defender is all I have now.

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  4. Anonymous
    2015-08-31T04:57:59+00:00

    Now that I can see 3 other comments (about Windows 10 not allowing third party Anti Virus) I see I only have one of the two I run and I don't think it is working properly.  How do I get Microsoft to fix this?

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