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Microsoft/Hide_non-critical_notifications.ps1

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+# Script by Timur@0x01337.com
+# Date: 2023-11-24
+<#
+.DESCRIPTION
+Hides non-critical Windows notifications.
+
+Requires administrator privileges and restart.
+
+.PARAMETER help
+Displays a detailed usage description of this script.
+
+.EXAMPLE
+PS> .\Hide-Non-Critical-Notifications.ps1
+
+.EXAMPLE
+PS> .\Hide-Non-Critical-Notifications.ps1 -help
+#>
+
+# Getting command line parameters
+param (
+    [parameter(Mandatory = $false)][switch]$help
+)
+
+$currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
+$isAdmin = $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
+if (!$isAdmin) {
+    Write-Error "This script requires administrator privileges"
+    exit 1
+}
+
+# Writing help message
+if ($help) {
+    get-help $MyInvocation.MyCommand.Path -Full
+    exit 0
+}
+
+$regLocation = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender Security Center\Notifications'
+$regKey = 'DisableEnhancedNotifications'
+
+if (!(Test-Path $regLocation)) {
+    Write-Host "Creating registry key path ($regLocation)"
+    New-Item -Path $regLocation -Force
+}
+
+try {
+    Get-ItemProperty -Path $regLocation -Name $regKey -ErrorAction Stop | Out-Null
+}
+catch {
+    Write-Host "Creating property ($regKey) in ($regLocation)"
+    New-ItemProperty -Path $regLocation -Name $regKey -PropertyType DWORD -Value '1'
+}
+
+try {
+    Set-ItemProperty -Path $regLocation -Name $regKey -Value '1'
+}
+catch {
+    Write-Error $_
+    exit 1
+}
+
+Write-Host "Non-critical Windows notifications now will be hidden. Please restart in order for the changes to take effect"
+
+exit 0
+