How to Enable or Disable All Windows Security Notifications in Windows 11

Option 1Using Local Group Policy Editor

The Local Group Policy Editor manages Windows Security notifications through system policies. It is only available in the Pro, Enterprise and Education editions of Windows. On Windows Home it does not exist, so use the Registry method further down instead. This tool changes how Windows handles security warnings without you editing the registry directly.

1. Open the Local Group Policy Editor. Type gpedit.msc in your search bar 🔍 and press Enter. The Local Group Policy Editor window should open. If you see a User Account Control prompt, click Yes.
2. In the left pane, navigate to this location:
   
   Computer Configuration > Administrative Templates > Windows Components > Windows Security > Notifications
   
   Click the folder, and its policies appear in the right pane.
3. Look at the right pane. Double-click Hide all notifications to edit it. A settings window opens for that policy.
4. To enable (turn on) all notifications:

   • Select the dot next to Not Configured. This is the default state, so it also undoes an earlier change.
   • Click OK
5. To disable (turn off) all notifications:

   • Select the dot next to Enabled. The policy is named “Hide all notifications”, so Enabled means the notifications are hidden.
   • Click OK
6. Close the Local Group Policy Editor.

The change usually takes effect within a short time. If you still see alerts, or still don't see them after switching back, restart your PC and check again.

Option 2Using Registry with Commands

Registry commands let you control Windows Security notifications on any version of Windows 10 or 11, including Home editions where the policy tool is missing. You run the commands in Windows Terminal with administrator rights, and they update the registry keys that turn all security alerts on or off at once. This is quick if you prefer typing commands to clicking through menus.

1. Right-click Windows Terminal and choose Run as administrator. If a User Account Control prompt appears, click Yes. A terminal window opens with administrator rights.
2. Choose the command you need and copy it.

To enable (turn on) all notifications: Copy and paste this command:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender Security Center\Notifications]
"DisableNotifications"=-
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications]
"DisableNotifications"=-
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications]
"DisableEnhancedNotifications"=-

To disable (turn off) all notifications: Copy and paste this command:

reg delete "HKLM\SOFTWARE\Microsoft\Windows Defender Security Center\Notifications" /v DisableNotifications /f
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications" /v DisableNotifications /t REG_DWORD /d 1 /f

Press Enter and wait for the command to finish. The terminal should report that the operation completed. If you see an access denied error, the window was not opened as administrator, so close it and start again from step 1. To undo the change, run the other command. If the alerts don't change right away, restart your PC.

Summary

Which method you use depends on your edition of Windows and whether you prefer policy settings or command lines. Use the Local Group Policy Editor on Pro, Enterprise or Education editions, or the Registry commands on any edition, including Home. Stopping these alerts helps prevent duplicate pop-ups when you run another antivirus program on your computer. You can bring the alerts back at any time by repeating the steps with the "enable" option.