How do I solve the NPM "418 I'm a teapot" error when trying to use npm install?

Question

I've been trying to install Yeoman and Gulp on a server that has a corporate proxy using the following command:

npm install -g yo gulp

However when I run this comand (or any "npm install" command) I get hit with:

npm ERR!       E418
npm ERR! 418 I'm a teapot: gulp@latest

I'm pretty confident that this is an issue pertaining to the proxy but I can't figure out what exactly is causing it.

Some tests I've done:

• I added the proxy to my npmrc file with login information for authentication and I believe it's entered properly. If I change any part of the username or password my error changes to an E407 (authentication failed).

• I ran "npm config set strict-ssl false" and that seemed to not do anything.

• I tried running different installs and I still just get "418 I'm a teapot package@latest".

Answer 1

So after a few more hours of digging through forums and blogs the solution was to change my registry from "http://registry.npmjs.org/" to "https://registry.npmjs.org/".

Apparently when on some proxies the registry will redirect to the address but add port 443 to the address if trying to connect without the https.

Hope this helps anyone else experiencing this issue!

Answer 2

I also got this error in my project and the main reason is change in our proxy settings. So i would like to suggest to check your proxy settings ... few commands which i used to resolve this error...

npm set strict-ssl false 
npm config set registry https://registry.npmjs.org/

check= https://registry.npmjs.org/

Answer 3

Thanks for answering now my npm not showing Err 418 i'm a teapot again.

You must update npm config like this :

npm set strict-ssl false 
npm config set registry https://registry.npmjs.org/

Try again install package using npm..