Navigate to Control Panel –> System and Security –> Action Center.Ĥ. When the installation is completed, normally Security Essentials will be enabled automatically on your system.

Download and Install Security Essentials from Microsoft. Uninstall any other (3rd party) Antivirus from your system, from Control Panel –> Programs –> Programs and Features.Ģ. – To Enable and use Security Essentials (MSE) in Windows 7 and Windows Vista for your protection:ġ. How to Turn On Windows Defender protection. How to Enable or Disable Windows Defender on Windows 10, 8, 8.1, 7 & Vista OS. – At the second part of this tutorial, you will learn how you can disable (Turn OFF) the Windows Defender protection, in case you have problems with it, or you prefer to use another (3rd party) security application on your computer. – In the first part of this guide you can find instructions on how you can enable (Turn ON) the Windows Defender Antivirus on your computer and some extra steps to troubleshoot common issues while enabling Windows Defender. In Windows 10 and Windows 8 OS, the Windows Defender comes pre-installed on your PC and it is enabled by default on your system. This tutorial contains step by step instructions on how to Turn On or Off the Windows Defender Antivirus (Microsoft Security Essentials in Windows 7, Windows 8 and Windows 10 OS. In Windows 7 and Vista OS, the “Windows Defender” was named “Security Essentials” and if you want to use it for your protection, then you can download and install it directly from Microsoft’s Website.

Turn on windows defender antivirus