Windows Defender Stopped Working.

[ChipaChups]

Hi all. When i click on windows defender, i am notified that this program is turned off.
It says if you are using another program that checks for harmful or unwanted software,use the action centre to check that programs status,but the program is running. Then it says if you would like to use this program click here.
I have disabled Avast free anti virus,but still get this message.
This program is blocked by group policy. For more information contact your system administrator (error code 0x8oo7o4ec)
I am on windows 7. Thanks C C

[dannyk13]

You shouldn't have more than one antivirus programme.

[Buenchico]

If you've got Avast on your computer I've no idea why you should want to use Windows Defender but it's almost certainly the presence of Avast that is causing the problem. If you really do want to ditch Avast then uninstall it completely, preferably by running Avastclear.exe:
https://www.avast.com/en-gb/uninstall-utility
Windows Defender should then function normally again.

If that doesn't work (or you simply want to remove the 'group policy'), edit the registry using either Solution 1 or 2 here:
https://appuals.com/this-program-is-blocked-by-group-policy/

[ChipaChups]

Hi Dannyk13. Thanks for your answer, its worked before with Avast just gone off in the past week,

[dannyk13]

I had the same problem when I had Avast installed so I uninstalled it and all has been fine since.;

[ChipaChups]

Thanks Buenchico now working again.

[ChipaChups]

Thanks again Dannyk13