Because this is a kernel-level driver for real-time performance, you may need to restart Windows with "Disable Driver Signature Enforcement" (Shift + Restart → Troubleshoot → Startup Settings).
Plug in the GM2020 via USB. Windows will detect the hardware and automatically assign an Exclusive COM port (usually COM3, COM5, or COM7). You will see a notification: "Device ready: GeoMaster GM2020 Driver Exclusive loaded." Verification Open GeoMaster Control Center. If the driver is exclusive, the top bar will display a gold shield icon. If it shows a gray plug, you are using a generic Microsoft driver and must disable Windows Update driver auto-installation. Troubleshooting Common Driver Exclusivity Issues Even with the "exclusive" driver, problems can occur. Here is your field guide to diagnosing them: Problem 1: "Driver is not exclusive" error message Cause: Windows Update overwrote your proprietary driver with a generic USB-serial driver. Solution: Use the Microsoft "Show or hide updates" troubleshooter to block automatic driver updates. Reinstall the exclusive driver. Problem 2: High latency or dropped RTK corrections Cause: USB power management is suspending the port. Solution: Go to Device Manager → Universal Serial Bus controllers → USB Root Hub → Properties → Power Management → Uncheck "Allow computer to turn off this device." Problem 3: COM port number changes every reconnect Cause: Registry conflicts. Solution: In Device Manager, open the exclusive driver's properties → Port Settings → Advanced → COM Port Number. Manually assign a static port (e.g., COM8). Click OK. Problem 4: The driver installs but the GM2020 isn't detected Cause: Damaged USB cable or port. Note: The GM2020 requires a full-featured USB 3.0 cable. Cheap charging cables lack the D+/D- data lines. Use the factory cable only. Compatibility Matrix The GeoMaster GM2020 Driver Exclusive is not backward compatible with the GM1900 or GM2100 models. It is strictly for the GM2020 hardware revision B and later. Ensure your device serial number starts with GM20B- . geomaster gm2020 driver exclusive
If you are experiencing dropouts, failed firmware updates, or correction lag, do not blame the hardware. Uninstall the generic drivers, download the exclusive package from the official portal, and follow the installation guide above. Your point clouds, stakeout errors, and project deadlines will thank you. Because this is a kernel-level driver for real-time