Batch script to auto-detect Steam paths and toggle Outbound Firewall rules for offline privacy.

ToggleSteamBlock.bat

<# :
@echo off
:: Batch section checks for Admin and launches PowerShell
setlocal
cd /d %~dp0
net session >nul 2>&1
if %errorLevel% neq 0 (
    echo Requesting Admin privileges...
    powershell -Command "Start-Process -FilePath '%~f0' -Verb RunAs"
    exit /b
)
powershell -NoProfile -ExecutionPolicy Bypass -Command "Invoke-Expression ($(Get-Content '%~f0' -Raw))"
goto :eof
#>

# --- PowerShell Section Starts Here ---

# 1. Locate Steam Installation from Registry
try {
    $regPath = "HKCU:\Software\Valve\Steam"
    $rawPath = (Get-ItemProperty $regPath -ErrorAction Stop).SteamPath
    $steamRoot = $rawPath.Replace('/', '\')
} catch {
    Write-Host "Could not find Steam installation in Registry." -ForegroundColor Red
    Read-Host "Press Enter to exit"
    exit
}

# 2. Define Targets (Main Executable + Helper)
# We search for steamwebhelper recursively in \bin\ because the folder name (cef.win64) changes often.
$helperPath = Get-ChildItem -Path "$steamRoot\bin" -Filter "steamwebhelper.exe" -Recurse | Select-Object -First 1 -ExpandProperty FullName

$targets = @(
    @{ Name="Block_Steam_Main"; Path="$steamRoot\steam.exe" },
    @{ Name="Block_Steam_Helper"; Path=$helperPath }
)

Write-Host "Steam Path Detected: $steamRoot" -ForegroundColor Cyan
Write-Host "----------------------------------------"

foreach ($t in $targets) {
    if (-not $t.Path -or -not (Test-Path $t.Path)) {
        Write-Host "Skipping $($t.Name): Path not found." -ForegroundColor Yellow
        continue
    }

    $rule = Get-NetFirewallRule -DisplayName $t.Name -ErrorAction SilentlyContinue

    if (-not $rule) {
        # Create Rule if it doesn't exist
        New-NetFirewallRule -DisplayName $t.Name -Program $t.Path -Direction Outbound -Action Block -Profile Any | Out-Null
        Write-Host "Created Rule: $($t.Name) [BLOCKED]" -ForegroundColor Green
    } else {
        # Toggle Rule
        if ($rule.Enabled -eq 'True') {
            Set-NetFirewallRule -DisplayName $t.Name -Enabled False
            Write-Host "Updated Rule: $($t.Name) -> [ALLOWED/DISABLED]" -ForegroundColor Gray
        } else {
            Set-NetFirewallRule -DisplayName $t.Name -Enabled True
            Write-Host "Updated Rule: $($t.Name) -> [BLOCKED/ENABLED]" -ForegroundColor Red
        }
    }
}

Write-Host "----------------------------------------"
Write-Host "Done."
Start-Sleep -Seconds 2