There are many reasons for the installation error here is some suggestions to overcome the error, the log for the installation is in : C:\Users\%username%\AppData\Local look for log files
Category: Operating Systems
Terminal Server License Error : The Remote Desktop Session Host Server is in Per User Licensing Mode Or Not ConfiguredTerminal Server License Error : The Remote Desktop Session Host Server is in Per User Licensing Mode Or Not Configured
Some time you get errors about terminal server licensing mode and no more connection can be made to the terminal an event id 4634 can occur and event ID 50