Is it possible to install multiple versions of npm for different projects that I am working on or are the npm installations always global? (Windows 10)
You can install multiple versions of npm by installing multiple versions of node. To do this, you can use nvm-windows. Each different installation of node installs a different version of npm
To use a different version of node and nvm in a project, you simple need to switch:
nvm use 5.0
You can also create a .nvmrc file containing the version number in the project root directory. nvm will use the specified version of node for that project.