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

Microsoft Security Essentials 4.6.305.0

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

This is the download page for Microsoft Security Essentials. 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 downloads? Get Download Accelerator Plus (DAP) free and increase your internet download speed considerably.

Security Information
Microsoft Security Essentials support inquiries or software troubleshooting are 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
657 / 1,357,514
Microsoft Security Essentials & ForeFront Client Security Definition Updates November 25, 2014
Protects your computer from any kinds of malware, virus, Trojans and spyware.
4,511 / 740,194
AVG Anti-Virus Definitions November 25, 2014
Latest AVG virus signatures
306 / 489,556
Avast Virus Definitions November 25, 2014
Latest avast! virus signatures
505 / 335,869
Kaspersky Anti-Virus Update November 25, 2014
Latest Kaspersky virus databases
125 / 235,918
McAfee Virus Definitions 7632
McAfee Virus Signatures
49 / 161,385
ESET NOD32 Antivirus 8.0.304.0
Good protection against threats
61 / 143,893
Win32/Sality Remover 1.2.0.616
Delete the Win32/Sality virus
105 / 119,258
Kaspersky Virus Removal Tool 11.0.3.8 [25.11.2014]
Virus scanner and detection software
116 / 103,835
Quick Heal Antivirus Plus 11.00 (4.0.0.1)
Anti-virus software with a proactive defense
37 / 92,299