Skip to content

Common issues and Troubleshooting

Failed To Create Erizos Control REST Socket


There are instances where the warning "Failed to Create Erizos Control REST Socket" appears, the common cause for this is there are multiple instances of a project open in that machine.
From time to time when closing Unreal the Unreal Editor process is left running in the background, those "Ghost processes" prevent Erizos Studio from being able to connect to Unreal Engine.

In the image below you can see that Task manager is showing 2 instances of Unreal running separately. one of them is a "ghost processes"

Ghost processes

To fix this issue:

  1. If you have Unreal open - close it.
  2. Open Task Manager (shortcut: Ctrl + Shift + Esc)
  3. Under Processes, and especially under Background processes search for Unreal processes (that can be done by pressing U in the keyboard which should take you to the first process that starts with a 'U').
  4. End task for every instance of UE4Editor found.
  5. Open Unreal and open the desired project.
  6. Make sure you have only one instance of Unreal in the Task manager.