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Message from the Editor:
I have adopted this guide because Windows Defender can come in useful as a complementary anti-malware program in addition to your antivirus protection. Furthermore, Windows Defender is built-in Windows Vista and Windows 7, and can run concurrently with many pieces of AV software!
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Windows Defender Contributors

Guide to Windows Defender

Windows-DefenderWindows Defender is an integrated antimalware program found in Windows Vista and Windows 7 which provides both, real-time protection as well as scanning capabilities including quick, full and custom scan. Windows Defender can run standalone or co-exist with other anti-virus software in which case it can be useful for protecting against spyware and potentially unwanted programs, which by exact definition are not viruses. To access Windows Defender, type Defender in the search box and hit enter. Check out the tools menu for options, quarantined and allowed items - Windows Defender can be a useful addition to your anti-malware arsenal!

Also make sure you check out our expert writers tips and read on below.

Latest Articles on Windows Defender
How to Fix Windows Defender Problems

Are you experiencing problems in using Windows Defender? Is the Windows Defender install unsuccessful? Find out the known issues on Windows Defender and what the solutions are...

 Does Regedit Close Itself? Your Computer May Be Infected

In some instances of Windows, certainly in Vista and Windows XP Regedit closes. So, what to do if your computer won't let you into system management software like RegEdit, MSConfig...
How to Fix Windows Defender Problems

Are you receiving error message or error codes when using Windows Defender? Does Windows Defender’s built-in updater not function? Are you unable to run Windows Defender?...

 Top Ten Free Security Tests

Is your computer secure? Is your network secure? Here's a list of ten free security tests that you can use to test whether your computers and network are secure....
Most Popular Articles on Windows Defender
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    		 How to Fix Windows Defender Problems

    Are you experiencing problems in using Windows Defender? Is the Windows Defender install unsuccessful? Find out the known issues on Windows Defender and what the solutions are....
  •  
    		 Reinstall or Enable Windows Defender

    If you uninstalled Windows Defender due to problems and want to try it again, or it is not loading, and you don't know why, learn about how to reinstall Windows Defender or enable it again so that...
  •  
    		 Twice as Much Protection, or Twice as Many Headaches? MSE and Windows Defender

    Find out what happens when you turn on Windows Defender with Security Essentials running. Should you run both programs at once?...
  •  
    		 Top Ten Free Security Tests

    Is your computer secure? Is your network secure? Here's a list of ten free security tests that you can use to test whether your computers and network are secure....
  •  
    		 Top AntiSpyware Software for Windows 7

    This article tells you what should really know about spyware and how you can protect your computer with top antivirus software, Windows Defender, and, perhaps Spybot. The solution we propose additionally...
More About Windows Defender
Reinstall or Enable Windows Defender

If you uninstalled Windows Defender due to problems and want to try it again, or it is not loading, and you don't know why, learn about how to reinstall Windows Defender or enable...

 Turning Off Windows Defender

If you’ve got your own computer security system set up and running and would prefer not to use Windows Defender, you will most likely want to shut if off to avoid running duplicate...