Windows defender service error issue

Asked By 650 points N/A Posted on -

Hi there,

 I am trying to install Windows Defender on my system running Windows XP Service Pack 2. My user has all the privileges for installation of software as I install much software on it using the same account.

Yesterday, when I tried to install Microsoft Windows Defender, I got a message of shortage of system privileges. The actual error is seen below.

Windows defender installer error

Windows Defender Installer Information

Service 'Windows Defender' (WinDefend) failed to start. Verify that you have sufficient privileges to start system services.

I checked my user account and it has the administrative privileges, so I think the issue is arising due to some other problem.

Does anyone have any idea about the cause of this error?

I will be waiting for replies.


Best Answer by Emily_11
Best Answer
Best Answer
Answered By 0 points N/A #118021

Windows defender service error issue


Dear TimothP,

You are trying to use Windows Defender. It is a very good, light weight, anti-spyware solution for your PC and the best thing is it is free for Genuine Windows. But some time it really creates some problem and one of it is we cannot install it.

We have a solution here and we have to follow these steps:

  1. Click the Start menu button and then click on Run.
  2. Then type regedit and press enter .This will open the registry editor.
  3. Search this key value DisableAntiSpyware. To do so, try to follow the steps:

    2. Then click SOFTWARE.
    3. Then click Microsoft.
    4. Then click Windows Defender. In the right window you will find DisableAntiSpyware key and its value.
  4. Now Double click on the key. A window will come and in the Value data field, change the value 1 to 0.
  5. Close the Registry Editor.
  6. Reboot the computer.

If everything is OK, then you just fix the problem.


Answered By 0 points N/A #118022

Windows defender service error issue



The possible causes may be that the some other anti-Malware suites disable Windows Defender because they provide their own equivalent protection. Windows Live One Care and Microsoft Forefront Client Security do this, and it is quite possible that Symantec is also doing the same. Check with Symantec’s self-help resources at their website to see whether they have documented this.

Another solution is:

  1. Click start and click on run command. Write regedit to open registry editor.
  2. Go to HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows DefenderDisableAntiSpyware and change the Dword value of 00000001 to 00000000.
  3. Close the registry editor.
  4. Reboot the computer.

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