Quick note: We will be installing Bitdefender, but the instructions will be similar to any other software.To disable Microsoft Defender Antivirus using third-party protection, use these steps: If you plan to disable the antivirus to install another anti-malware software, this process isn't necessary since installing another security software will disable Microsoft Defender Antivirus automatically. How to disable Microsoft Defender Antivirus using third-party solution In addition to enabling the antivirus, it is also a good idea to turn on the 'Tamper Protection' feature again using the same steps outlined above, but in step 5, make sure to enable the toggle switch. You can always undo the changes using the same instructions, but in step 5, select the Not Configured option.

Once you complete the steps, the Windows antivirus will be disabled permanently, but the 'shield' icon will remain in the Taskbar because the icon is part of the Windows Security app, not the antivirus program. Under the 'Virus & threat protection settings' section, click the Manage settings option.Search for Windows Security and click the top result to open the app.To disable Tamper Protection, use these steps: Since the Local Group Policy Editor modifies the security settings from outside the app, the antivirus will restore any changes you have made during the next restart. On Windows 10, Tamper protection is a feature that protects Windows Security against unwanted changes from outside the app. The only caveat is that you must also disable the 'Tamper Protection' feature before the policy can apply. If you want to disable Microsoft Defender Antivirus permanently, you can use the Group Policy Editor. How to disable Microsoft Defender Antivirus using Group Policy This is not a permanent solution, but it's the best option to disable the protection to make system changes or install programs that are causing conflicts. Or you can use the same instructions outlined above, but in step 5, make sure to turn on the Real-time protection toggle switch. Once you complete the steps, the antivirus will temporarily disable its protection to install apps or make specific system changes without unwanted conflicts.Īfter restarting the computer, the antivirus will enable again automatically.

Disabling windows defender