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Microsoft Windows Defender (64-bit)

Download Editors' Rating:
Editors' Rating:
Average User Rating:
out of 5 votes out of 5 votes

Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    Oct. 25, 2006
  • Price:

Editors' Note: This product requires Windows validation. The Download Now link will take you to the Microsoft site for downloading.

Windows Defender is a free program that helps you stay productive by protecting your computer against pop-ups, slow performance and security threats caused by spyware and other potentially unwanted software. The worldwide SpyNet community plays a key role in determining which suspicious programs are classified as spyware. Microsoft researchers quickly develop methods to counteract these threats, which are automatically downloaded to your PC, so you stay up-to-date. This product is free of charge for licensed Windows customers.

Editors' Review


With Windows Defender, Microsoft's antispyware tool, the company slips a little open-source camaraderie through the door. Windows Defender's interface is clean and informative. Icons are logically placed in tabs, and the software is easily set to run unattended daily. Be sure to check the requirements, as many older systems cannot run this software.

Defender installs easily and updates quickly. The program's home page changes to display needed commands, such as download updates. The Full Scan is fast, but total scan time depends on your system and hard-drive size. The Quick Scan scans the most vulnerable areas and lives up to its name. Power users will want to configure Custom Scan; it's easy and scans only your selected areas. Vista users will notice that Defender includes extra options not found in versions for other Windows operating systems.

The power in antispyware is detecting and defeating new problems. Defender's SpyNet component lets users easily upload information about new problems. From those uploads, Windows quickly updates its spyware file, and users can simply check at SpyNet for solutions to spyware found on their PCs. Available only for validated Windows OS users, this powerful software operates quickly and easily. Novice users can practically set it and forget it; power users will find it easy to personalize to their systems.

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Publisher's Description

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User Reviews

Results 1–5 of 5

5 stars

"Very Good + Free = WIN"

July 09, 2009  |  By thydavidcome

2009-07-09 18:48:50  |  By thydavidcome

 |  Version: Microsoft Windows Defender (64-bit) 1.1.1


1. It is integrated seemlessly with Vista/7.
2. Uses very little resources
3. Free
4. Quite fast, and it updates often
-It is well worth the time of setting it up


1. Hard to find on Windows 7


Its very good, its very fast. This + Windows Security Essentials and you may never have to worry about getting viruses again.

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5 stars

"Very Good Product"

April 29, 2009  |  By hnyaji

2009-04-29 07:39:52  |  By hnyaji

 |  Version: Microsoft Windows Defender (64-bit) 1.1.1


Very Good Product


could be more professional



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3 stars

"good enough working fine"

December 31, 2008  |  By ydurgv.alenz

2008-12-31 01:27:44  |  By ydurgv.alenz

 |  Version: Microsoft Windows Defender (64-bit) 1.1.1


as it title says windows defender it really defend my laptop from malware


as of now i have nothing to say against it coz it is working fine at the moment


i like it because of its functionalities

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4 stars

"An application must be installed ^_^ ."

December 31, 2007  |  By Bergani Balabonov

2007-12-31 02:55:34  |  By Bergani Balabonov

 |  Version: Microsoft Windows Defender (64-bit) 1.1.1


Even it is not the best but it really protect your pc very well, peace ^_^ .

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1 stars

"Cannot even run the program on a Celeron 1.5 laptop"

October 25, 2006  |  By Philberk

2006-10-25 14:02:02  |  By Philberk

 |  Version: Microsoft Windows Defender (64-bit) 1.1.1


cannot run the program

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Results 1–5 of 5

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Full Specifications

Publisher Microsoft
Publisher web site
Release Date October 25, 2006
Date Added October 25, 2006
Version 1.1.1
Category Browsers
Subcategory Internet Explorer Add-ons & Plugins
Operating Systems
Operating Systems Windows 2000/XP
Additional Requirements Windows 2000/XP/2003 Server
Download Information
File Size 7.1MB
File Name External File
Total Downloads 103,848
Downloads Last Week 939
License Model Free
Limitations Not available
Price Free
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