Machines are Unresponsive.怎么变成available

Unresponsive - UiPath Robot and Orchestrator have not communicated in the last two minutes. This value can be configured using the Scalability.Heartbeat.FailureThreshold parameter in web.config.

More details here https://docs.uipath.com/orchestrator/automation-cloud/latest/user-guide/robot-statuses-classic-folders