Access is denied


starting a robot from taskbar, starting a workflow from studio or starting a robot from orchestrator I get the error "Executor start process failed, reason System.UnauthorizedAccessException: Access is denied. "
This has started happening after changing the uiRobot service from running as local system account to a specific user. This was the only way I could get the robot to connect to orchestrator. The user I am using has admin and RDP priveledges.

I followed the steps here

Steps to reproduce:

Change robot service user

Current Behavior:

Workflow does not run, no logs are updated

Expected Behavior:

Studio/Robot/Orchestrator Version:

Last stable behavior:
Last stable version: 2016.2.6344
OS Version: WIN 7
Others if Relevant: (workflow, logs, .net version, service pack, etc):