When installing UiPath Studio, the action that requires administrator privileges is installing the robot in service mode. Service mode is a type of robot installation that allows the robot to run unattended automations in the background, without requiring a user to be logged in. Service mode requires administrator privileges because it involves installing the robot as a Windows service and registering it to the UiPathOrchestrator.msi file. Installing the robot in user mode does not require administrator privileges, because it involves installing the robot as a Windows application and registering it to the UiPathAssistant.msi file. User mode is a type of robot installation that allows the robot to run attended automations in the foreground, requiring a user to be logged in. Installing UiPath Studio itself does not require administrator privileges, because it involves installing the Studio as a Windows application and registering it to the UiPathStudio.msi file. References:
[Robot Installation Modes], [Installing the Robot], [Installing Studio]