Hi,
Please describe in more detail you current server configuration and what steps you have performed so far.
1. Are the users logging on to a Server 2008 R2 Remote Desktop Session Host (RDSH) server, or Server 2012/2012 R2 RDSH server? If the RDSH server is 2012/2012 R2 then 2012 RDS CALs are required. Additionally you need to configure the
licensing mode of the 2012 RDSH server to be Per User. From your description it sounds like it is set to Per Device. The licensing mode is set in the RDS deployment properties: Server Manager -- RDS -- Overview -- Deployment Overview -- Tasks --
Edit Deployment Properties -- RD Licensing tab.
2. If the users are logging on to a Server 2008 R2 RDSH server, did you set its licensing mode to Per User and point it to the new 2012 RD Licensing server? You can do this by logging on to the RDSH as an admin and opening RD Session Host Configuration
(tsconfig.msc) or by setting the appropriate group policy.
Thanks.
-TP