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Terminal Server Client Access licenses


I'm running a Microsoft Windows Server 2003 SP2 with Terminal Server License set to Per Device.

The error I'm getting when trying to connect to TS through RDC is:

The Remote Session was disconnected because there are no Terminal Server client access licenses available for this computer. Please contact the server administrator.

I was able to login before but now can't, however when I login using the same username and password from another PC, it lets me in fine. So I'm thinking it's a client side issue as oppose to serve side.

Is there a way to reset the registry ( only if this is the case) on the Client side PC so as TS doesn't recognise this PC and let it login? Speculative at this moment, but seems bizarre that I'm able to login
using the same credentials on a different PC.

Many thanks in advance

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The reason you can login from another PC is that THAT machine has a valid license: you have license mode "Per Device". Your other PC must have had a temporary license before, that has expired.
Are you running a TS Licensing Server? Have you imported and activated TS CAL's in TS Licensing Server? If so, you could reset the whole licensing database:
If you don't, you'll need to set up a TS License Server, purchase CAL's and activate them.

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