I played for several years through game tracker lite, on bf1942, and have scores of detractors to prove it. Since upgrading to Windows 10 a year ago, I have not been able to log in, save one time about six months ago. I log in on my administrator account, do all the dances, etcetera. No joy. Can/will anyone help?

Have you tried to right click the icon and run as administrator? Or change the compatibility mode to Windows 7 or 8? GT Lite has not had a new release or been tested with Windows 10.