This is because the tool uses symlinks that require admin privileges to create.

It was time to switch to one of these versions and start working: nvm use 10.24. I then installed all the Node.js versions that I might need to use in the near future: nvm install 10.24. After I restarted the terminal window, the nvm command was available to me. When I was done with that, I downloaded nvm-setup.zip from the NVM for Windows releases page and ran the installer from that archive.

Deleting the npm and npm-cache folders from the %appdata% folder.

Uninstalling Node.js from the Windows Programs & Features window.

Clearing the npm cache by calling npm cache clean -force.I followed a great guide I found on Stack Overflow. Since I already had Node.js installed on my machine, it seemed like a good idea to do a full uninstall first. When I realized that I would also need to downgrade my Node.js installation, I decided to bite the bullet and install NVM for Windows. At first, it seemed like downgrading npm would suffice. I have been working on older Ionic Angular projects lately that can not be built with the latest version of Node.js.

Uninstall node js nvm