The default is usually C:\Program Files\Microchip\MPLABX\v6.00 .
To install the software using the mplabv600windowsinstallerexe file, follow these steps: mplabv600windowsinstallerexe
Visit the Microchip MPLAB X IDE archives to locate the v6.00 installer. The default is usually C:\Program Files\Microchip\MPLABX\v6
Minimum 4GB (8GB+ highly recommended for complex projects). Disk Space: At least 4GB of free space. Why use v6.00? mplabv600windowsinstallerexe
Note that the IDE does not come with compilers by default. After the main installation finishes, you should download and install the MPLAB XC Compilers separately to build your projects. System Requirements