[Vuejs]-Vue-cli · Failed to download repo vuejs-templates/webpack-simple: tunneling socket could not be established, statusCode=403

The issue, I suspect is that you’re installing from behind a VPN.

You can try disabling it to do the install

on corporate networks that’s not always the option

If you don’t have the option to disable…

you may be able to use
npm config set registry=http://registry.npmjs.org/

The reason that works is that you’re no longer connecting to the default which uses https, where the SSL is failing due the the proxy.

Note that there is an issue of security if you opt to use http instead of https

You may also be able to use a proxy definition in a .npmrc file

If you have your proxy information, you can add it to the .npmrc file in the directory.

https://docs.npmjs.com/misc/config#https-proxy

proxy http://{proxy_server}:{proxy_port}
https-proxy http://{proxy_server}:{proxy_port}
strict-ssl=false

src gist