Out of memory error/exception



  • in Debug
  • add a package from Package Manager
  • open a project in Studio(.xaml)
  • read large Excel files: >300.000 rows
  • in Orchestrator, error: Schedule for process could not be started. Undefined robot.


By default, maxReceivedMessageSize of the named pipes binding is 65,536.

Increase this parameter in %localappdata%\UiPath\app-17.1.6522\UiRobot.exe.config

Details in this post: UiPath Out of Memory