This is the main configuration file for Vim. It exists in two versions—global and personal.
The global vimrc file is placed in the folder where all your Vim system files are installed. You can find out the location of this folder by opening Vim and executing the following command in normal mode:

:echo $VIM

Examples could be:

Linux: /usr/share/vim/vimrc

The personal vimrc file is placed in your home directory. The location of the home directory is dependent on your operating system. Vim originally was meant for UNIXes, so the personal vimrc file is set to be hidden by adding a dot as the first character in the filename. This normally hides files on UNIXes but not on Microsoft Windows. Instead, the vimrc file is prepended with an underscore on these systems.
So, examples would be:

Linux: /home/user_name/.vimrc