. While it was a market leader for its time, users looking to download and run it on Windows 7 face significant compatibility and sourcing hurdles. Compatibility and Operating System Support

| Problem | Symptom | Solution | |---------|---------|----------| | | "Invalid or missing license key" | Reinstall Sentinel driver manually from Drivers folder on media. | | Graphics flicker | Screen flashes on Window 7 Aero | Disable Aero theme – use Windows Classic. | | DAServer fails to start | Communication offline | Run DAServer as administrator and set to Windows XP SP3 compat mode. | | Alarm printing error | Printer spooler crash | Install Microsoft Loopback Adapter and assign a static IP. | | SQL Access failure | Historical trends empty | Install Microsoft SQL Server 2005 Express (not 2008 or newer). |

: 1GHz processor, 2GB RAM, and 1280x800 screen resolution.

Use a Virtual Machine (VM) running Windows XP SP3. This is the most reliable way to maintain legacy SCADA software while using a modern host OS.