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Windows 7: Cannot start windows defender

12 Apr 2010   #1

Windows 7 home premium 64bit
 
 
Cannot start windows defender

Hi all,
I'm having a problem with windows defender. I noticed it was not working, although it has been in the past, so I tried to enable it but get this message:
"This program is blocked by group policy. For more information contact your system administrator. (Error code: 0x800704ec)"
Any help appreciated.

My System SpecsSystem Spec
.

13 Apr 2010   #2

Windows 7 Ultimate x64 SP1
 
 

Did someone else block it from being used on the computer?
My System SpecsSystem Spec
13 Apr 2010   #3
Microsoft MVP

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit
 
 

Quote   Quote: Originally Posted by lffoar View Post
Hi all,
I'm having a problem with windows defender. I noticed it was not working, although it has been in the past, so I tried to enable it but get this message:
"This program is blocked by group policy. For more information contact your system administrator. (Error code: 0x800704ec)"
Any help appreciated.
Hello Welcome to SF !!

Try this thread window defender

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender and delete DisableAntiSpyware and reboot the System once !!

Hope this helps,
Captain
My System SpecsSystem Spec
.


14 Apr 2010   #4

Windows 7 home premium 64bit
 
 

Thanks for the replies,

I checked out the link containing the following;

Quote:
I had this problem yesterday, It was cause by msa.exe (a malware disguised as an antivirus). You will need to start the Group Policy Editor. Click on administrative Templates and then Windows Components In Windows Components click on Windows Defender disable "Turn off Windows Defender". It worked for me, I hope it does for you.P.S: to start the Group Policy Editor, click on start and in the Search Box type group and then click on "Edit Group Policy"
I don't get any sense when I try to get into the group policy editor, type in group and just get taskbar options. I have checked in services via control panel and windows defender is not disabled.

I'm lost
My System SpecsSystem Spec
14 Apr 2010   #5
Microsoft MVP

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit
 
 

Hello !!

Did you try the Reigstry Method ??

- Captain
My System SpecsSystem Spec
14 Apr 2010   #6

Windows 7 home premium 64bit
 
 

Hi Cap'n Jack,

Tried to delete via the registry but won't allow me too. Box comes up "unable do delete all specified values"

Quote   Quote: Originally Posted by Capt.Jack Sparrow View Post
Hello !!

Did you try the Reigstry Method ??

- Captain
My System SpecsSystem Spec
03 Jun 2010   #7

windows 7
 
 

I have figured out to how to get windows defender to work with the error code in affect! Go to start menu, search, run, regedit.exe, hkey_local_machine\software\policies\microsoft\windows defender. Look to your right in the same window and you will see DisableAntiSpy... right click on that then left click modify make the value data zero. min the window go to control panel click windows defender it will ask to turn back on, then click it to. it will say the same error code then close the error code window and there is your windows defender!!!! You will have to leave the value data at zero though!! If that works close the regedit.exe window. Hope you didnt delete anything yet when you make the value zero thats just what it registers as!!
My System SpecsSystem Spec
03 Jun 2010   #8

Windows 7 & Windows Vista Ultimate
 
 

Warning: Do not edit the registry if you are unfamiliar with it and without creating a backup first. See Registry - Backup and Restore - Windows 7 Forums
My System SpecsSystem Spec
03 Jun 2010   #9

Windows 7 Ultimate 64bit
 
 

turn off group policy then try
My System SpecsSystem Spec
03 Jun 2010   #10

Windows 7 Professional 32-bit (6.1, Build 7600)
 
 

Quote   Quote: Originally Posted by Krispy1 View Post
turn off group policy then try
Exactly, Or make a batch file to toggle the policy setting in the registry
My System SpecsSystem Spec
Reply

 Cannot start windows defender





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