Windows defender

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After install avast internet security, windows defender not working.(this app has been turned off and isn't monitoring your computer) i uninstalled avast and i couldnt restart WD. i tried to start manually from windows services but it says error577.. now my pc is unprotected. how can i fix this problem?
 
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After install avast internet security, windows defender not working.(this app has been turned off and isn't monitoring your computer) i uninstalled avast and i couldnt restart WD. i tried to start manually from windows services but it says error577.. now my pc is unprotected. how can i fix this problem?
 

Regedit32

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Hi Dasun,

I've not used Avast but many third party security programs disable Windows Defender by default as its not a good idea to be running two security programs at the same time.

As you have now uninstalled Avast and want Windows Defender working again you'll need to take a look at whether Avast modified a Registry key to disable Windows Defender.

This can be done doing the following:
  • Right-click on Start > now left-click on Command Prompt (Admin)
  • When the UAC Confirmation window pops up click Yes
  • In the command window type or copy & paste the following command:

    Code:
    reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender"

    Press Enter key to execute

    If this key has been modified you will see a result similar to the sample image below:

    cmdsample.png


    Other entries you may see appear could be:

    [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection]
    "DisableBehaviorMonitoring"=dword:00000001
    "DisableOnAccessProtection"=dword:00000001
    "DisableScanOnRealtimeEnable"=dword:00000001
If you can report back on your reg query results telling me what you see there I can assist you in correcting this in order to allow you to use Windows Defender again.

Regards,

Regedit32
 
Joined
Jun 12, 2016
Messages
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Hi Dasun,

I've not used Avast but many third party security programs disable Windows Defender by default as its not a good idea to be running two security programs at the same time.

As you have now uninstalled Avast and want Windows Defender working again you'll need to take a look at whether Avast modified a Registry key to disable Windows Defender.

This can be done doing the following:
  • Right-click on Start > now left-click on Command Prompt (Admin)
  • When the UAC Confirmation window pops up click Yes
  • In the command window type or copy & paste the following command:

    Code:
    reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender"

    Press Enter key to execute

    If this key has been modified you will see a result similar to the sample image below:

    View attachment 3189

    Other entries you may see appear could be:

    [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection]
    "DisableBehaviorMonitoring"=dword:00000001
    "DisableOnAccessProtection"=dword:00000001
    "DisableScanOnRealtimeEnable"=dword:00000001
If you can report back on your reg query results telling me what you see there I can assist you in correcting this in order to allow you to use Windows Defender again.

Regards,

Regedit32
It is working... now WD working fine.. thank you very much!! :)
 

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