Microchip provides all XC compilers as free, unrestricted-use downloads. However, version 2.05 is no longer the current version and must be accessed through the archives. Microchip Technology Official Archive: You can find the installer for v2.05 on the MPLAB Ecosystem Downloads Archive MPLAB XC8 v2.x Alternative Direct Download:
The file size is approximately . Save it to a familiar location (e.g., Downloads folder). mplab xc8 compiler v2 05 download free
Which you are targeting for this build?