windows-defender-in-vistaWindows defender is integrated with Windows operating system and comes free of charge( or included in the cost). Now if you already using a powerful spyware you would not need the Windows defender. Again, it might slow down your system. If the Windows Defender is serving none of your purposes, why not get rid of it. Well, you might have no clue, how to uninstall or remove the Windows Defender in Windows Vista. Here's the trick and hack to disable Windows Defender.
Windows Defender offers a graphical user interface (GUI) to stop using Windows Defender for real-time protection checking and disabling and Turn off the Windows Defender service.

Most of the guides have asked to disable Windows Defender using the Services in Control Panel and uncheck the startup item in System Configuration (MSConfig) . It needs to be turn off Wndows Defender and prevent it from starting up. This is a not a recommended way to uninstall the Windows Defender.

Here's the right trick to get rid of

Step 1

Run Windows Defender from Start Menu

Step 2

Click on tool button

Step 3

Now click on the options link under Tools and Settings section
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Step 4

Scroll down the Options page

Step 5

Uncheck the check boxes of the two settings

i) Use real-time protection (recommended) under Real-time protection options
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ii)   Use Windows Defender under Administrator options
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Step 6

Hit on the Save option

Step 7

The Windows Defender is turned off dialog message will appear confirming that Windows Defender no longer runs. After the Windows Defender is disabled, if you try to run the program it will bring up Windows Defender is turned off dialog window and unable to proceed to Windows Defender main window anymore

windows-defender-off

Windows Security Center would display a red alert icon in the notification area that warns about the functioning of spyware and other malware protection software.

Now that you are done you can install a powerful anti-spyware software to remove this alert.

In case you need the Windows Defender in Vista again you can go to the Start Menu and turn it on.