I got the same error after I updated from 9-something version to 10.0.16.6559. First time I installed "above" and did let it to make everything auto. Second time I uninstalled existing version, then restarted pc, then installed new version 10.0.16.6559, but it did not make any difference.
If I install back 9.0.16.4587 - error disappears.
In all cases services are up and running (last column states "running"). Restart of services doesn't help.
When I uninstall plastic these services disappear and then reapper with new installation.
C:\Users\Hadmaerd>cm version
10.0.16.6559
C:\Users\Hadmaerd>cm lrep localhost:8084
Error: Подключение не установлено, т.к. конечный компьютер отверг запрос на подключение. [::ffff:127.0.0.1]:8084
"Connection wasn't established because endpoint pc refused connection request"
Same in Plastic SCM client application
