407 Authentication required npm

Question

Hello everyone I´ve been trying to configure and use npm on my enterprise PC without success.

I´ve set proxy, https-proxy, strict-ssl false, registry http://registry.npmjs.org proxy has been set like this "http://user:password@proxy_ip:proxy:port" Where the password has a special character written in urlencode.

npm config get proxy 

returns proxy with credentials as they should be.

I have cleared my npm cache and tried again.

No success.

Any ideas what can be the problem?

Answer 1

Editing the .npmrc file in user folder worked for me. I set the proxy and npm registry as follows:

proxy=http://username:password@proxy:port/
https-proxy=http://username:password@proxy:port
registry=http://registry.npmjs.org/  

Note : for usenames and passwords containing special charcters, the characters need to be encoded in the proxy configuration. e.g if username is "user" and password is "1234@user", then the .npmrc file will look like :

proxy=http://user:1234%40user@proxy:port/
https-proxy=http://user:1234@user@proxy:port
registry=http://registry.npmjs.org/ 

where, %40 is the encoded form of "@". In my case, the pound symbol(#) was not getting accepted in username or password(Dont know why).

Answer 2

We should add proxy with username and password to avoid this error. For example:

• username: admin
• password: admin123
• proxy: 172.10.3.21
• port: 3128

---

npm config set proxy http://admin:admin123@172.10.3.21:3128
npm config set https-proxy http://admin:admin123@172.10.3.21:3128

Answer 3

I recommend reading through this article to configure the proxy for npm. http://wil.boayue.com/blog/2013/06/14/using-npm-behind-a-proxy/

• npm config set proxy http://proxy.company.com:proxyport

• npm config set http-proxy http://proxy.company.com:proxyport

• npm config set https-proxy http://proxy.company.com:proxyport

Hope this is useful for you!

Answer 4

Usually, when you are behind a corporate proxy, it is needed to add the domain where you are at. Given that also the characters should be URL encoded, it would look like:

https://domain%5Cusername:password@proxy:port