As we Know Microsoft was planning to Announces No-Cost Consumer Security Offering. Microsoft was using the codename Morro for this antivirus, but finally it got a official name and it’s Microsoft Security Essentials (MSE) now. Microsoft Security Essentials is coming to replace previous Microsoft releases such as Windows Live OneCare and Windows Defender.
MSE is Microsoft’s free antivirus and windows security program that comes for free and hence you can’t expect some additional features like Firewall, Email scan and protection etc. Commercial antivirus programs like Norton, Kaspersky, AVG will work much better than this free product.
Windows Security Essentials installation requires WGA activation. You have to validated your Windows copy using WGA procedure, MSE won’t work on your computer if you have not validated. So, you must validate your Windows copy.
Download Microsoft Security Essentials (MSE)
Download Microsoft Security Essentials (MSE) for 32-bit (x86) Windows Vista and Windows 7
Download Microsoft Security Essentials (MSE) for 64-bit (x64) Windows Vista and Windows 7