We have two Remote Desktop servers (Windows 2008 Server R2), with one of them being the license server. We had 30 CALs so only 30 sessions could be opened. We bought 5 more CALs and installed them on the license server. Licences seem to be installed and working but we cannot get more than 30 users at a time. Licensing diagnosis throws no errors and shows the right number of licenses available (35).
I've looked into RD session host configuration and in the RDP-tcp connection properties, in the label: Network Adapter there is a Maximum connections option, set to 30, but is greyed out and I cannot change it.
Also I've tried to set the GPO in
[Computer_Config - Admin. template - Windows Components - Remote Desktop Services - Remote Desktop Session Host - Connections]
-> Limit number of connections
to 999999. But still no access for more than 30 users.