Microsoft Security Essentials
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. Before version 4.5, MSE ran on Windows XP, Windows Vista and Windows 7, but not on Windows 8 and later, which have built-in AV components. MSE 4.5 and later do not run on Windows XP. The license agreement allows home users and small businesses to install and use the product free of charge. It replaces Windows Live OneCare, a discontinued commercial subscription-based AV service, and the free Windows Defender, which until Windows 8 protected users from only adware and spyware.
How to Install Microsoft Security Essentials on your Pc
Windows Defender is built into the latest versions of Windows and helps guard your PC against viruses and other malware.
For a PC running an older version of Windows 7, you can download Microsoft Security Essentials for the low, low price of free.
Windows Defender for Windows 8, Windows RT, Windows 8.1, Windows RT 8.1, and Windows 10 provides built-in protection against malware. You can’t use Microsoft Security Essentials, but you don’t need to—Windows Defender is already included and ready to go.
To download Microsoft Security Essentials
- Choose your preferred locale or language from the list that follows.
- Choose your operating system to begin the download process.