Running Microsoft 8,1 updated frequently.
Purchase AutoCad Lt 2015 360 in April rnad OK for about 3 months then crashed indicating "loss of connectivity and invalid Licensing" After many clean uninstalls and re-downloading it would sometimes stop on Install or soetimes go to completion of setup but never worked, always looking for "acadlt.exe".
AutoDesk online help checked everyting and said it was a local problem. The Geek Squad spent hours in Best Buy and online concluding it was a program issue.
Microsoft Form suggest you might help.
