To do this, open Microsoft Security Essentials, click Update, and then examine the virus and spyware definitions status. After the file extraction dialog box closes, you can verify that the virus and spyware definitions were updated. The dialog box indicates that the definition update is installing. When the definition update file runs, a file extraction dialog box appears. If you are prompted for an administrator password or for confirmation, type the password, or click Continue. Right-click the file, and then click Run As Administrator. To install the saved file, follow these steps:ĭouble-click the file, and then click OK. If you click Save, remember the folder where you saved the file.

Or, click Save to save the file to the computer.

The 64-bit versions of Windows include 圆4-based versions of Windows.Ĭlick Run to install the definition update file immediately. Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want without interruptions or long computer wait times.Important: You must be running a 64-bit version of Windows to run a 64-bit version of Microsoft Security Essentials. This software uses green, yellow, and red color codes to designate the security status of your PC and a color-coded icon in the taskbar tells you at a glance if your attention is needed. Once you have installed it, the software updates automatically once a day. It's easy to tell if your PC is secure when the top border is green, you're good to go. Downloading and installing Microsoft Security Essentials is free and easy. Prior to version 4.5, MSE ran on Windows XP, Windows Vista, and Windows 7, but not on Windows 8 and later versions, which have built-in. Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. When Microsoft stopped supporting XP in 2014, they also announced that Microsoft Security Essentials would no longer be available, with updates for existing. Microsoft Security Essentials ( MSE) is an antivirus software (AV) product that provides protection against different types of malicious software, such as computer viruses, spyware, rootkits, and Trojan horses. Microsoft Security Essentials for Windows provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.

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