Standard operating systems (Windows and macOS) do not have built-in support for the .rar format. You will need a third-party archiver:
: The official tool created by the format's developer. It is trialware for Windows. Download S150429 rar
The file is not a widely recognized standard software package; however, the prefix "RAR" often relates to Abaco Systems (formerly GE Intelligent Platforms) avionics interface hardware, such as the RAR-PCIE or RAR-USB . These devices are used for ARINC 429 databus communication in avionics test and simulation. Standard operating systems (Windows and macOS) do not