SSL Error: CERT_UNTRUSTED while using npm command

Question

I am trying to install express framework using npm command but getting following error.

error message is

E:\\myFindings\\nodejs_programs\\node>         


        

Answer 1

npm ERR! node -v v0.8.0
npm ERR! npm -v 1.1.32

Update your node.js installation.The following commands should do it (from here):

sudo npm cache clean -f
sudo npm install -g n
sudo n stable

---

Edit: okay, if you really have a good reason to run an ancient version of the software, npm set ca null will fix the issue. It happened, because built-in npm certificate has expired over the years.

Answer 2

Reinstall node, then update npm.

First I removed node

apt-get purge node

Then install node according to the distibution. Docs here .

Then

npm install npm@latest -g

Answer 3

I think I got the reason for the above error. It is the corporate proxy(virtual private network) provided in order to work in the client network. Without that connection I frequently faced the same problem be it maven build or npm install.

Answer 4

You can bypass https using below commands:

npm config set strict-ssl false

or set the registry URL from https or http like below:

npm config set registry="http://registry.npmjs.org/"

However, Personally I believe bypassing https is not the real solution, but we can use it as a workaround.

Answer 5

I had same problem and finally I understood that my node version is old. For example, you can install the current active LTS node version in Ubuntu by the following steps:

sudo apt-get update
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt-get install nodejs -y

Installation instructions for more versions and systems can be found in the following link:

https://github.com/nodesource/distributions/blob/master/README.md

Answer 6

If you're behind a corporate proxy, try this setting for npm with your company's proxy:

npm --https-proxy=http://proxy.company.com install express -g