ERR! 426 Upgrade Required, when I interact with the npm registry

Issue

When I try to publish a new package to npm or try to logout, I get the following error message:

npm ERR! code E426
npm ERR! 426 Upgrade Required

Solution

Beginning October 4, 2021, all connections to npm websites and the npm
registry—including for package installation—must use TLS 1.2 or
higher.

Source

What I did:

• upgrade Node (0) to its current recommended version: 14.18.0 LTS
• upgrade npm with npm install -g npm@latest

Other causes: I had to manually set the registry to use https instead of http as well:

• npm config set registry https://registry.npmjs.org/

---

(0) When using nvm, that’s what you need to do:

nvm install 14.18.0
nvm use 14.18.0
nvm alias default 14.18.0

Answered By – Robin Wieruch

Answer Checked By – Jay B. (AngularFixing Admin)