It has evolved into a full antivirus program, replacing Microsoft Security Essentials in Windows 8 or later versions. It was first released as a downloadable free anti-spyware program for Windows XP and was shipped with Windows Vista and Windows 7. Microsoft Defender Antivirus (formerly Windows Defender) is an antivirus software component of Microsoft Windows.
Windows Server 2008 R2 SP1 or later Īntivirus software, personal firewall, parental control, intrusion prevention, email filtering and anti-phishing.
