OrchestratorHttpRequest results in System.ServiceModel.ActionNotSupportedException error

[loginerror (Maciej Kuźmicz)]

Hi @ivandeca

Could you make sure that UiPath services are up and running and that you do not have two different Studio installation on your machine?

I would first try to restart the machine. See for more clues in this post:

What is "one or more errors occurred"

I presume you have updated from 2018.2.4 or 2.3. You may be running an old UiROBOT version versus the UiStudio is the latest version. A restart may do the trick but the cause is partly related to the shortcuts created by previous version that invokes older robot. A quick workaround for me was to invoking UiPath.Studio.exe and UiRobot.exe in 18.3.2 folder. Hope this helps. Been awhile I’m away from UiPath forum. [UiPath%20issue]