[green]To the Toolmaker, your nice little cartoon drawing of your glass looks cool, but your solid model sucks. Do you want me to fix it, or are you going to take all week to get it back to me so I can get some work done?[/green]
Try installing the latest version license service (I think it's 7.2.0) that you can download from GTAC.
I am using Windows 10 and the license service (latest version) works with no trouble at all.