Download the appropriate installer for your Windows installation (32 bit or 64 bit) from GitHub. If you’re not sure, open Control Panel -> System to check. After the zip file is downloaded, ensure that the installer is extracted before attempting to run it. Running it while the installer is inside the zip will cause the installation process to fail.
Double click on the installer to run it. If you see any Security warnings, click Run (Windows 7) or More Info -> Run Anyway (Windows 8+).
Choose whether to install for All Users on the machine or the Current User. The All Users option requires administrator privileges, but installs in a way that is accessible to all user accounts, the Current User install is only accessible from the account it is installed from.
If you select All Users, you will need to accept the security prompt that appears to allow administrator access.
Regardless of whether All Users or Current User is chosen, the software is installed to
C:\Users\Public\wpilib\YYYY where YYYY is the current FRC year. If you choose All Users, then shortcuts are installed to all users desktop and start menu and system environment variables are set. If Current User is chosen, then shortcuts and environment variables are set for only the current user.