Right before completing setup, the tool offers to run an initial scan to assess the PC's current security status as soon as it fetches the latest virus definitions. As far as the interface is concerned, MSE keeps separated the areas for scanning, virus and spyware. Microsoft Security Essentials (MSE) represents Microsoft's free anti-malware solution for computers running Windows 7 or Vista. It's considered by most third-party developers and testers to be a "baseline" among av products, and Microsoft never stated the contrary. Microsoft Security Essentials runs quietly and efficiently in the background so youre free to use your Windows-based PC the way you wantwithout interruptions or long computer wait times. Before installing Microsoft Security Essentials, we recommend that you uninstall other antivirus software already running on your. It's the easiest choice, so it can't be convenience. Microsoft Security Essentials 64-bit isn't flashy on purpose. But it offers effective protection with minimal fuss, for free. If you're in the market for a capable antivirus, firewall, and Internet security solution for Windows, would you consider one that consistently ranks at or near the top in tests against the big names in antivirus protection? We've always thought that many people assume that they need a third-party antivirus program because there are so many of them, including lots of freeware. That would seem to explain why more people don't take advantage of Microsoft Security Essentials.