The robot executor (UiPath.Executor.exe) is the robot component directly responsible for executing a process. When a job is started, the robot service launches a robot executor instance.

The Executor is always aware of DPI settings per-monitor. As a result, workflows can be executed at any DPI, regardless of the configuration on the machine they were created on. For apps that are DPI-unaware, or intentionally marked as unaware, you can choose to disable DPI.

Based on the automation project, the robot service launches the type of executor intended to run the automation.

There is a type of executor for each of the automation project type available:

Always having an additional executor ready to run an automation improves process execution start time.

By default, the following pre-loaded executors are automatically launched when the robot starts:

You can overwrite the default behavior by adding the UIPATH_PRE_LOADED_EXECUTOR user environment variable to the robot machine with the value None. This way, the pre-loaded executor only starts when the first process is run.

To completely disable the pre-loaded executor feature, add the UIPATH_DISABLE_PRE_LOADED_EXECUTOR environment variable to the robot machine with the value set to "True".