Press Win + R and in the box type control appwiz.cpl, hit Enter to open Control Panel.Close the program from Windows and also Quit it from the system tray.Try to completely reinstall this software. If the not loading problem persists then there may be corrupted files that are hindering the G Hub from opening. Fix 2 – Reinstall the Logitech G HUB application exe file and choose Run as Administrator from the context menu. To run ad Administrative Righ-Click on the.exe files and run them with Administrative Access one by one in order. Now open the folder where you have installed the G Hub, by default you can navigate to C:\Program Files\LGHUB.