11 window defender

Microsoft Defender Antivirus is included with Windows 10 and Windows 11, so you do not need to pay extra to use it. It provides built-in protection against malware, viruses, and other security threats. If you have installed Windows 11, Microsoft Defender Antivirus should be active by default unless you have installed another antivirus program, which would disable it automatically. If you are having trouble using Defender, it might be due to settings or conflicts with other software.

If you need further assistance, you can troubleshoot issues with Microsoft Defender Antivirus or check its settings to ensure it is enabled.

References:

• Microsoft Defender Antivirus in Windows Overview
• Virus and threat protection in Windows 11
• Microsoft Defender Antivirus compatibility with other security products
• Troubleshoot Microsoft Defender Antivirus service startup problems