How to Disable Windows Defender on Windows 11 Temporarily

Microsoft Defender is a robust built-in antivirus solution in Windows 11. However, there are times when you need to disable it temporarily—for example, when installing legitimate software or games that are often mistakenly detected as threats (false positives), or for troubleshooting purposes. This guide will show you the correct and safe way to turn off real-time protection in Windows 11, applicable to all major update versions including 22H2, 23H2, and 24H2. Disabling the antivirus, even temporarily, will make your PC more vulnerable to malware, viruses, and other threats. Only do this if you are absolutely sure about the files or applications you are about to run. Once finished, immediately re-enable the protection. While not recommended for daily use, some reasonable scenarios for temporarily disabling the antivirus are:

• Specific Game/Software Installation: Some installers or game modification files (for legitimate use, of course) are often modified and can trigger antivirus detection.
• Using System Tools: Applications for printer resetters or system activation sometimes require low-level access that is blocked by Defender.
• Troubleshooting Conflicts: To check if the antivirus is causing an application to run slowly or encounter errors like 0xc000007b.

Keep in mind, Windows will automatically re-enable this protection after a while or after a restart to maintain your system's security.

Step 1: Open Windows Security

The easiest way is through the Start menu.

1. Click the Start menu.
2. Type "Windows Security".
3. Click the application that appears in the search results.

Opening the Windows Security app from the Start menu.

Step 2: Go to "Virus & threat protection" Settings

Inside the Windows Security dashboard, select the main menu on the left side or the shield icon.

1. Click Virus & threat protection.

Windows Security dashboard with the 'Virus & threat protection' menu highlighted.

Step 3: Manage Settings

Under the "Virus & threat protection settings" heading, you will find a link to manage settings.

1. Click Manage settings.

The 'Manage settings' link under the 'Virus & threat protection settings' section.

Step 4: Turn Off "Real-time protection"

This is the main switch for active protection.

1. Find the switch under Real-time protection.
2. Click the switch to change it from On to Off.
3. A User Account Control (UAC) window will appear asking for confirmation. Click Yes.

The 'Real-time protection' switch in the Off position. At this point, your real-time antivirus protection has been temporarily disabled. The Windows Security icon in the taskbar may display a yellow exclamation mark as a reminder. After you are finished with the task that required the antivirus to be off, it is very important to re-enable it. Simply repeat the steps above and click the Real-time protection switch back to the On position. By following this guide, you can manage your system's security more flexibly without sacrificing long-term protection.