Private/UpdateSystemPathNow.ps1
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function UpdateSystemPathNow { [CmdletBinding()] param( [parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [string]$PathToAdd ) $RegistrySystemPath = 'HKLM:\System\CurrentControlSet\Control\Session Manager\Environment' $CurrentSystemPath = $(Get-ItemProperty -Path $RegistrySystemPath -Name PATH).Path [System.Collections.Arraylist][array]$CurrentSystemPathArray = $CurrentSystemPath -split ';' | Where-Object {![System.String]::IsNullOrWhiteSpace($_)} | Sort-Object -Unique if ($CurrentSystemPathArray -notcontains $PathToAdd) { $CurrentSystemPathArray.Insert(0,$PathToAdd) $UpdatedSystemPath = $CurrentSystemPathArray -join ';' Set-ItemProperty -Path $RegistrySystemPath -Name PATH -Value $UpdatedSystemPath # Now the registry is updated, but current processes haven't taken the changes. # We will now force all open processes/windows to take the updated system PATH if (-not $("Win32.NativeMethods" -as [Type])) { # import sendmessagetimeout from win32 $null = Add-Type -Namespace Win32 -Name NativeMethods -MemberDefinition @" [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern IntPtr SendMessageTimeout( IntPtr hWnd, uint Msg, UIntPtr wParam, string lParam, uint fuFlags, uint uTimeout, out UIntPtr lpdwResult); "@ } $HWND_BROADCAST = [IntPtr] 0xffff $WM_SETTINGCHANGE = 0x1a $result = [UIntPtr]::Zero # notify all windows of environment block change [Win32.Nativemethods]::SendMessageTimeout($HWND_BROADCAST, $WM_SETTINGCHANGE, [UIntPtr]::Zero, "Environment", 2, 5000, [ref] $result) } } |