To permanently disable Windows Defender due to third-party antivirus conflicts: 1. Use Group Policy Editor (Pro/Enterprise editions). 2. Modify the registry to turn off real-time protection. 3. Disable the Windows Security service via Service Manager. 4. Install a trusted third-party antivirus, which automatically disables Defender.
If you are trying to disable Windows Defender permanently due to conflicts with third-party antivirus software, here are several methods to achieve this:
The operating environment of this tutorial: Dell XPS 13, Windows 11
1. Disable Windows Defender via Group Policy Editor
The Group Policy Editor allows advanced users to configure system settings that override default security behaviors. This method is effective on Windows Pro and Enterprise editions.
- Press Windows R, type gpedit.msc, and press Enter.
- Navigate to Computer Configuration > Administrative Templates > Windows Components > Microsoft Defender Antivirus.
- Double-click Turn off Microsoft Defender Antivirus.
- Select Enabled, then click OK.
2. Use Registry Editor to Disable Real-Time Protection
Modifying the registry can bypass Windows Defender's real-time monitoring. Incorrect changes may affect system stability, so back up the registry before proceeding.
- Press Windows R, type regedit, and press Enter.
- Go to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender.
- If the DisableAntiSpyware DWORD doesn't exist, create it.
- Set its value to 1 to disable Windows Defender.
3. Stop Windows Defender Service (Service Manager)
Disabling the background service prevents Windows Defender from launching at startup. This change persists until the service is re-enabled.
- Press Windows R, type services.msc, and press Enter.
- Locate Windows Security Service or Security Center.
- Right-click the service and select Properties.
- Change Startup type to Disabled, then click Apply.
4. Install a Third-Party Antivirus Program
Windows Defender automatically disables most of its components when a valid third-party antivirus is detected. This is the most stable and supported method by Microsoft.
- Download and install a recognized antivirus suite such as Bitdefender, Norton, or Kaspersky.
- Launch the program and ensure real-time protection is active.
- Verify in Windows Security that it shows "Virus & threat protection is managed by another antivirus".
The above is the detailed content of How to turn off Windows Defender permanently?. For more information, please follow other related articles on the PHP Chinese website!
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