Windows · Free download · Security and Access Control

Microsoft Windows Defender (formerly MS AntiSpyware)1.1.1593.0

Windows Defender is a security technology that helps protect Windows you from spyware and other potentially unwanted software

Operating system
9x/NT/2000/ME/XP/Windows 10/11
File size
4.91 MB
License
Freeware
Last updated
Nov 16, 2025
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Overview

What is Microsoft Windows Defender (formerly MS AntiSpyware)?

Windows Defender is a security technology that helps protect Windows you from spyware and other potentially unwanted software

In depth

A closer look at Microsoft Windows Defender (formerly MS AntiSpyware)

Windows Defender (Beta 2) is a security technology that helps protect Windows you from spyware and other potentially unwanted software. Using Microsoft Windows Defender, known spyware on your system will be detected and removed.

Verdict

Should you download Microsoft Windows Defender (formerly MS AntiSpyware)?

Microsoft Windows Defender (formerly MS AntiSpyware) runs on 9x/NT/2000/ME/XP/Windows 10/11 and is available under the Freeware license — the installer is 4.91 MB. We’ve catalogued it under Security and Access Control.

Verified clean. Every Microsoft Windows Defender (formerly MS AntiSpyware) build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
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At a glance

Microsoft Windows Defender (formerly MS AntiSpyware) specifications

Category
Security and Access Control
Publisher
Microsoft
Last updated
Nov 16, 2025
License
Freeware
Operating system
9x/NT/2000/ME/XP/Windows 10/11
File size
4.91 MB
Price
Free
Page views
493

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