This should be okay. The current stable release is
19.10.4 while the current preview is at
I’m referring to whether you are using a private/enterprise instance whether cloud based or behind a company firewall.
This can be done by logging into Orchestrator and looking at the lower left screen, hovering over Orchestrator.
The second instance is the one that you will want use that or https://cloud.uipath.com/[accountname]/[servicename]/
If the URL is invalid I’ve seen the following errors
System.NotSupportedException: Empty orchestrator api versions!
UiPath.Service.Orchestrator.Clients.OrchestratorHttpException: Invalid machine key.
Other causes that I’ve seen of what you are describing is when users have had multiple installations of UiPath Studio and when running Robot Tray there was a version conflict.
Could you have a anti-virus, firewall, proxy, router that might be interfering or otherwise shaping/filtering your traffic?