A non-transitory computer readable medium stores a communication program for causing a computer to execute a process for performing a function, the process including: verifying, when detected that a type of a target communication device is changed, setting details which are previously prepared by changing setting of a communication protocol based on the setting details which are previously prepared for the type of the target communication device and communicating with the target communication device; and applying the changed setting of the communication protocol when verified that no communication error is detected during the verification.