The ZENworks Agent is responsible for device registration, content distribution, and software updates for a device.
In addition to the ZENworks Agent, the Endpoint Security Agent is installed on devices when ZENworks Endpoint Security Management is activated (full license or evaluation). The Endpoint Security Agent is responsible for enforcing security policy settings on the device.
You should verify that the Endpoint Security Agent is enabled. For instructions, see Configuring ZENworks Agent Features.