Windows Registry Editor Version 5.00

; Disable Windows Defender Security Center Notifications

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\WindowsDefenderSecurityCenter\DisableEnhancedNotifications]
"value"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\WindowsDefenderSecurityCenter\DisableNotifications]
"value"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\WindowsDefenderSecurityCenter\HideWindowsSecurityNotificationAreaControl]
"value"=dword:00000001

; Disable Windows Security Center Notifications

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center]

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center]
"FirstRunDisabled"=dword:00000001
"AntiVirusOverride"=dword:00000001
"FirewallOverride"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications]
"DisableEnhancedNotifications"=dword:00000001
"DisableNotifications"=dword:00000001

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Notifications\Settings\Windows.SystemToast.SecurityAndMaintenance]
"Enabled"=dword:00000000