An information processing device includes a communication processing unit that performs communication with an external device according to an instruction from application software, and a trace processing unit that executes a first information trace process when a first predetermined condition is satisfied and executes a second information trace process when a second predetermined condition is satisfied. The first information trace process includes obtaining, from an operating system, environmental information that is information about an operating environment of the application software and writing the environmental information to an environmental information log file. The second information trace process includes writing, to a communication log file, information indicating a procedure of communication that the communication processing unit performs with the external device, obtaining the environmental information from the operating system, and writing the environmental information to the environmental information log file.