I am having issues getting the terminal servers in our district to leverage the existing RDS license server. I have run through all the KB articles, blogs, etcthat I can find but nothing seems to assist with this issue. Here's some background on an example setup:
RDS Host Server Name: NETREQUEST
RDS Licensing Server Name: KMS
The KMS server handles all of our KMS activation and has all of the 2012 Per-User CALs installed on it. It is a Server 2012 installation and it is not a Domain Controller.
NETREQUEST is a basic 2012 Enterprise server with a single application installed. During the grace period this server is working flawlessly other than the licensing issues. When attempting to add the licensing server, KMS is never discovered. When manually adding the KMS server as a licensing server I receive the message "The license server specified is not valid. Verify the server name and specify a valid server name before saving the settings". The same message is displayed whether I use the FQDN, NetBIOS name, or IP address of the KMS licensing server.
In the "Review Configuration" page in RDS Licensing Manager, everything is green and appears to be set up correctly. I have attempted to change the discovery mode from Domain to Forest but it had no effect on the issue.
I verified the published data in Active Directory via ADSIEdit and ADDS. TS-Enterprise-License-Server is set to the KMS server's FQDN. In ADSIEdit, CN=TS-Enterprise-License-Server siteServer is also set to the KMS Server's LDAP path...
I have tried running the RDS services as both machine accounts as well as domain accounts with no change to the issue. It is currently set up to run as Network Service as it was the default setting upon installation of the role.
These two servers are on the same subnet and VLAN. Both are virtualized utilizing Microsoft Hyper-V within the same host server. The Windows Firewall is turned off on both servers and network communication between the servers is perfect. They both also utilize the same DNS servers and are of course joined to the same domain.
I have attempted to recreate another virtual machine to replace KMS and NETREQUEST to see if it was a faulty installation but this had no effect on the system...
I am running out of ideas and the resources online have been limited for the 2012 installations. I am hoping the MS Community can assist me in coming up with a direction to go with my troubleshooting or have an answer that I may have missed. I have other terminal servers that I need to build (and have built), but I cannot move forward until this licensing server is up and running like it should be.
If you need any other information, please don't hesitate to ask.
Thank You!
Curtis Ness
Database & Systems Administrator
Moorhead Area Public Schools