The first thing that we need to do is install NVM.
To upgrade, run the new installer. It will safely overwrite the files it needs to update without touching your node.js installations. Make sure you use the same installation and symlink folder. If you originally installed to the default locations, you just need to click “next” on each window until it finishes.
Credits Directly copied from : https://digitaldrummerj.me/windows-running-multiple-versions-of-node/