Hide non-critical notifications: registry value DisableEnhancedNotificationsComputerHKLM\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications

Policy ID: Notifications_DisableEnhancedNotifications
Scope: Computer Configuration
Supported on: At least Windows Server 2016, Windows 10 Version 1709
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Windows Security › Notifications

Registry

DisableEnhancedNotifications

REG_DWORDComputer

HKLM\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications Current key

Enabled value: 1
Disabled value: 0

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications]

; Options (use only one)
; Enabled
"DisableEnhancedNotifications"=dword:00000001
; Disabled
"DisableEnhancedNotifications"=dword:00000000

CMD

:: Options (use only one)

:: Enabled
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications" /v "DisableEnhancedNotifications" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications" /v "DisableEnhancedNotifications" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications' -Name 'DisableEnhancedNotifications' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications' -Name 'DisableEnhancedNotifications' -PropertyType DWord -Value 0 -Force | Out-Null