Choose Your Language: International US DE ES FR
Hello Guest Login Here or

Microsoft Security Essentials 4.8.204.0

Downloading file: mseinstall.exe
Please select a download mirror: External Mirror 1 External Mirror (64 bit)

Microsoft Security Essentials - No cost, no hassle security software for your PC Microsoft Security Essentials is a free security application that offers reliable, basic protection for your computer, against a wide range of threats and flawless integration with Windows operating systems....more

If you encounter any problems in accessing the download mirrors for Microsoft Security Essentials, please check your firewall settings or close your download manager.

Microsoft Security Essentials is offered as a free download

Faster PC? Get PCSpeedUP and increase your computer speed considerably.

Security Information
Microsoft Security Essentials support is available ONLY from its publisher/developer Microsoft Corp.. Although we constantly scan all the programs present on this website with a strong combined antivirus solution, for your improved security, we strongly advise you to check the downloaded files with a good antivirus and antispyware software.
Most Popular in Antivirus
1,223 / 1,449,702
Microsoft Security Essentials & ForeFront Client Security Definition Updates February 10, 2016
Protects your computer from any kinds of malware, virus, Trojans and spyware.
21,969 / 1,064,467
AVG Anti-Virus Definitions February 10, 2016
Latest AVG virus signatures
1,013 / 498,362
Avast Virus Definitions February 10, 2016
Latest avast! virus signatures
1,598 / 377,556
Kaspersky Anti-Virus Update February 10, 2016
Latest Kaspersky virus databases
553 / 251,975
McAfee Virus Definitions 8070
McAfee Virus Signatures
104 / 163,930
ESET NOD32 Antivirus 9.0.349.14
Good protection against threats
123 / 148,024
Win32/Sality Remover 1.2.0.616
Delete the Win32/Sality virus
215 / 125,948
Kaspersky Virus Removal Tool February 10, 2016
Virus scanner and detection software
106 / 110,083
Quick Heal Antivirus Plus 11.00 (4.0.0.1)
Anti-virus software with a proactive defense
30 / 94,131