I have used xrdp a lot, more than I ever did in SLE 11, on SLES (server)
12. Are you using SLE plus the workstation extension, or SLED properly?

Also, I do not see anything in here about what you have done to make this
work, an dhow you are testing it, and what the symptom behind "not
working" is. If this is a new setup, it may be worthwhile to also start
with a current support/service pack (SP), as SLE 12 SP1 is not current.

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Good luck.

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