npm install on windows 10 gets stuck at fetchMetadata

I have node.js installed on my Windows 10 machine. Node version is 6.10.3 and npm version is 3.10.10. When I run npm install, it gets stuck at "[ ..............] - fetchMetadata: sill mapToRegistry uri registry.npmjs.org/zone.js" Can someone please suggest what might be the solution for this? I have tried with both the Node Windows Binary Package (.zip) and the Node Windows Installer (.msi). I have been trying from my home network, so I believe proxy is not the issue.

Thanks

via abhiram wuntakal