if (key != null) return SystemState.RestartRequired; What the message means Solution 1: The "Real"

The Fix:

Temporarily disable or uninstall other network management tools. Try running the problematic application as the only active network tool. If it works, you know there is a conflict. Check driver status: if (key

Mockup: The "Action Required" Overlay

1. Temporarily disable Real-time protection in Windows Security (Settings > Privacy & Security > Windows Security > Virus & threat protection > Manage settings).
2. Disable any third-party antivirus entirely (right-click its icon in the system tray and select "Pause protection").
3. Run the installer as Administrator again.
4. Re-enable your antivirus after successful installation, and add an exception for your VPN or proxifier program.

2.2 Driver Already Loaded but Non-Functional