not able to install node_modules

Question

I am trying to install node_module but getting following error:

For example:npm install grunt-preprocess

D:\\grunt_pre>npm install grunt-preproces         


        

Answer 1

Try the answer by @ Canmah. If it does not help try to check your proxy configuration.

If there is a proxy, update the npm registry as mentioned below and then try installing the node module.

@ the command prompt update the 
npm config set proxy :