Abstract: An electronic apparatus includes a communication interface, a memory, a microphone, a speaker, a touch screen display, and at least one processor. The electronic apparatus transmits voice input and identification information matched with the compatible information, to an external server in response to receiving a voice input for performing a task, to obtain state information of an executing application. The electronic apparatus stores the incompatible information matched with the identification information in the memory, receives action information, which is generated based on the voice input and the compatible information, and the compatible information from the external server, to obtain the incompatible information stored in the memory, using the identification information matched with the compatible information. The electronic apparatus performs the task based on the action information, and uses the obtained incompatible information when performing the task.