How to Enable or Disable Microsoft Defender in Windows 11
You can enable or disable Microsoft Defender in Windows 11 to manage your system’s built-in antivirus protection.
Microsoft Defender is Windows 11’s native security solution, providing real-time protection against malware, viruses, and other online threats.
Disabling Defender, even temporarily, leaves your PC vulnerable to attacks that could compromise your data or system integrity, especially if you’re not using an alternative antivirus program.
For example, Windows 11 uses Defender’s SmartScreen feature to block potentially malicious websites and downloads before they reach your device.
This guide shows you exactly how to turn Defender on or off using simple settings or Group Policy Editor.
How to Enable Microsoft Defender
You can manage your security settings through the main Windows Settings menu. %📂%LNK0%%
1. Open the Settings app by pressing Windows key + I on your keyboard or by clicking Start then Settings.
2. In the menu on the left, click Privacy & security. Then, click Windows Security on the right side.
3. Click the Open Windows Security button.
Managing Firewall Settings
In the new window, click Firewall & network protection. You will see three types of networks:
- Domain network: Used for office or business computers.
- Private network: Used for home or trusted work networks.
- Public network: Used for places like airports or coffee shops.
Note: Changing these settings requires admin privileges.
Click on each network profile to turn the firewall on or off.
Managing Virus Protection
1. Click Virus & threat protection in the left menu.
2. Click Manage settings.
3. Toggle Real-time protection and Cloud-delivered protection to the On position.
You can also check App & browser control to ensure your settings are active.
Summary
Microsoft Defender is vital for keeping your Windows 11 PC safe from malware. You should keep it enabled unless you have installed a different security program that conflicts with it. You can manage these settings easily through the Privacy & security section in your Windows Settings. Regularly checking these options ensures your computer stays protected against new threats.
Was this guide helpful?
I get an error saying: “You will need a new app to open this windowsdefender link”. All my options are to open the Microsoft Store which does not give any other options after all.
I have same issue, and i am still searching solution. I found one more thing Windows defender service is stopped and it is not getting started.
Hi .. I can’t open Windows Sercurity .. it doesn’t run any progress … and I don’t see protection arena like pic.2
i have the same problem i can’t open the windows security
This this post.
Enable the service 🙂
Service.msc in the search bar
Find the windows Defender process and enable is click on start and that problem is gone.
Not true. Mine starts and stops immediately thereafter. An sfc /scannow shows no issues. I also have Malwarebytes installed and I know it likes to disable Windows Defender but that should not stop me from enabling it again.
Windows Defender and Windows Update not working in Windows 11 LITE
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