RDS 2012 R2 cannot add 3rd party (parent domain) licensing server

Hi,

I have a RDS 2012 R2 farm and i cannot add a 3rd party licensing server that is in a parent domain (forest root domain - hosted by our corp HQ). I will edit deployment properties for the deployment in the first CB server to add a licensing server in per user mode. Seemes to work, however no licenses are given to SH servers. Have made GPO aswell to explicitly specify licensing server and mode, however i think this should not be neccessary.

Any ideas?

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