From system configurations to creating new users and updating Windows, all can be done from its System Settings pane. Windows 11 has a centralized location for majority of its settings. How to Enable Microsoft Defenderīelow are steps that help you turn on or enable Microsoft Defender if it’s disabled: Windows Defender helps protect your computer from authorized access and adds another layer of security in protecting your data, identity from bad actors. For some, Microsoft Defender is still used even with other third party security programs installed on Windows 11. If you don’t have other commercial antivirus or security program installed, Microsoft Defender should be a great feature to turn on and use.