Microsoft Security Essentials icon

Microsoft Security Essentials (32-bit)
883.1 k

A free antivirus software from Microsoft


Latest version (32-bit)

Nov 10th, 2015

Older versions
For some time now, Microsoft has been developing its own antivirus software. Microsoft Security Essentials is a pack of tools designed for Windows 7 and earlier that adds a number of non-standard features for protecting your computer, including a comprehensive antivirus software called Windows Defender.

Microsoft Security Essentials is a real-time protection system that will protect your computer from all kinds of malware - like viruses, rootkits, and spyware - by analyzing your computer and alerting you whenever it detects unfamiliar and potentially dangerous elements. It detects malware by consulting its huge database which is constantly and automatically updated. You can use it without an Internet connection, too, so it can analyze your computer even if it's not online. It also consumes very little resources, unlike antivirus suites made by third parties. This makes Microsoft Security Essentials an ideal solution since it won't affect the use of your computer while it works.

The program is divided into several sections: analysis, upgrade, history, and configuration. If you don't have much experience, you can focus on the first two. In the history section, you can check what was found when your computer was analyzed. It shows the detected items, quarantined items, and allowed items. In the configuration section, you can schedule scans, automate tasks, modify protection options in real time, add files and folders to the exclusion list, and edit advanced antivirus settings.

For all these reasons, Microsoft Security Essentials is a great choice if you're looking for a free, lightweight, and reliable antivirus software.
Reviewed by Daniel Rivas Translated by Taryn


Windows Defender is included by default in Windows 8, 81. RT, and 10, so it's not necessary to install it if you have any of these versions.

More information

License Free
Op. System Windows
Category Antivirus
Language English
Author Microsoft
Downloads 883,082
Date Nov 10th, 2015
Why is this app published on Uptodown? (More information)

Older versions (32-bit) Nov 10th, 2015 (64-bit) Nov 10th, 2015 (32-bit) Nov 10th, 2015
4.5.0216.0 Apr 14th, 2014
4.5.0216.0 (64 bits) Apr 9th, 2014
2.1.1116.0 (64 bits) Nov 24th, 2011

Rate this App

Microsoft Security Essentials icon
Review the app


10 reviews


grumpybluegorilla87525 icon
grumpybluegorilla87525 in 2020

installer in another language, understand nothing

caramelo1959 icon
caramelo1959 in 2019

How can I download this antivirus?

lokillone icon
lokillone in 2011

It is one of the best Antivirus I have ever tried, it has nothing but nothing to envy other antivirus with more "FAME"

musikomponist icon
musikomponist in 2010

I can only say that it is among the best antivirus I have tried, apart from having a very intuitive interface, it is excellent; the only drawback is that to install it you must have the original Windo...

angelo3 icon
angelo3 in 2010

microsft contributes little respect to other antivirus but due to the information of companies that certify and discovered that it has a good detection rate of malware and spyware but they do not offe...

See more

Microsoft Security Essentials related articles

See more

Similar to Microsoft Security Essentials

360 Total Security icon
Keep your PC safe with five antivirus engines
Avast Free Antivirus icon
A free, simple, and powerful antivirus tool
Kaspersky Internet Security icon
Keep your PC free of malware and other threats
Kaspersky Anti-Virus icon
Prevent and destroy all viruses in your PC
NOD32 Antivirus icon
Speed and accuracy in this Virus fighter
Baidu Antivirus icon
Free, lightweight antivirus for your computer
Avira AntiVir Personal icon
Protection against viruses, trojans, worms and dialers
Kaspersky Total Security icon
Protect your system against any kind of external menace

Discover Utilities apps

Auslogics Duplicate File Finder icon
Get rid of duplicate files and save space
McAfee Stinger Portable icon
Scan your PC and remove virus
Avast Free Antivirus icon
A free, simple, and powerful antivirus tool