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Does Microsoft Security Essentials replace Windows Defender?

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2 Answers 2

up vote 35 down vote accepted

Yes. Windows Defender protects against adware and spyware, while MSE does all that and more (protection from viruses, rootkits, etc).

MSE will actually disable Windows Defender to manage your PC's realtime protection. Also, from the Security Essentials Wikipedia page:

Microsoft Security Essentials (MSE) (Previously codenamed Morro) is a free antivirus software created by Microsoft that provides protection against viruses, spyware, rootkits, and trojans for Windows XP, Vista, and 7.

MSE replaces Windows Live OneCare — a subscription antivirus service — and Windows Defender, which only protects users from adware and spyware.

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What he says it true, Michael. He is telling the truth! – thenonhacker Oct 2 '09 at 4:18
It should be noted that in windows 8 and 8.1, Windows Defender has vastly improved towards the older windows versions and is basically a full malware protection.… for more info. – Nate Kerkhofs Jan 7 '14 at 14:26
Windows Defender says it protects against viruses now. – Jonathan Leaders Jan 10 at 20:04

There's been an update. Windows Defender now replaces Microsoft Security Essentials in Windows 8 and 8.1


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But what I said is relevant now. And this is the internet, so people will still find this question now, so it's relevant. Secondly, no version was specified in the question. Thanks for the downvote 9_9; rolls eyes – Jonathan Leaders Jan 15 at 19:52
If you have Windows 8 it is helpful. If you have Windows 7 it won't apply to you. What do you have? – Jonathan Leaders Jan 16 at 20:30
You seem to be missing my point. Don't worry about me. I will just reverse my vote. – Ramhound Jan 16 at 20:52

protected by studiohack Apr 14 '11 at 20:02

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