After sign out the Prod server bot got disconnected in Orchestrator
Hi @chec
Can you please give more details?
Is there a question or are you just sharing a one-time occurrence of a problem? 
Please read the About New Topics section of the Forum FAQs.
Creating topics with clear information about the problem ensures that the community can help you quicker.
Thanks.
If the Robot disconnected after logging out of the Windows Session, you most likely do not have Robot Registered as a Service and there for the User Host executable is terminated upon logging out.
As suggested above, please provide more details about your installation and use case in order to get more help from the community.