It sounds like you are running out of licenses. Can you check if you have
any available using TS licensing tool?
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Sandeep Thakker said:
That's the first thing I checked. I get no errors in event viewer. Neither
in Server nor in client. Strange. We have xp pro clients had the same
problems and we updated with adminpack.msi and then they all started work
fine. In short later version of rdp. But windows 2000 machine has the
problem with latest rdp client as well. We were able to connect to it for 90
days and then it stopped. 5 W2K3 server connects fine and other five sends
an error that your license cannot be upgraded. We have a license server
running on our DOMAIN CONTROLLER with 20 license pack for application mode
use configured as client licenses. I tried to delete registry key for temp
license and then it says there is no client access license. After deleting
license regisry key it was still connecting fine with the other five 2003
servers. We have not upgraded any of these boxes from NT 4. They all are
brand new os and then upgraded active directory. Same thing with Exchange
also. So I dont think any problem with NT4 TRACES. Whatever documents I
found for licensing and client licenses can not be upgraded I checked them
with no result.