2.5 Upgrading the Compiler
To upgrade your compiler, simply install the new compiler (as you installed the previous one), but skip the Installation Complete - Licensing Information screen by clicking the Next button. The new compiler will get installed in a versioned directory, e.g.,
C:\Program Files\Microchip\xc32\v4.45
If you already have a license, there is no need to activate or obtain a new license.