Windows Defender is software that helps protect your computer against pop-ups, slow performance, and security threats caused by spyware and other unwanted software by detecting and removing known spyware from your computer. Windows Defender features Real-Time Protection, a monitoring system that recommends actions against spyware when it's detected, minimizes interruptions, and helps you stay productive.

Windows Defender ( is a Windows software application that has been discovered and submitted by users of Aploader. The latest version that our users have reported running on their systems is Windows Defender 1.1.1600.0. The most popular version of this application used by our users is Windows Defender 4.5.0218.0.

Operating System: Windows

Description: Windows Defender User Interface

File name: MSASCUI.exe

File Version: 1.1.1600.0

Product Version: 1.1.1600.0

Internal Name: MSASCUI

Copyright: Microsoft Corporation. All rights reserved.