When I run `npm install`, it returns with `ERR! code EINTEGRITY` (npm 5.3.0)

Question

I am getting this error while running sudo npm install. On my server, npm was installed earlier. I\'ve tried to delete the package-lock.json file,

Answer 1

This Worked for me . open the project in CMD the run

npm cache verify 
npm install 
npm start

Answer 2

There are several valid and helpful responses here, but I would like to add that in my case the simplest solution was:

1. Delete package-lock.json;
2. Remove folder AppData\Local\npm\cache or AppData\Roaming\npm\cache;
3. Remove folder node_modules.staging;
4. Run npm install again.

After that everything ran smoothly.

Answer 3

I am behind my organization's proxy, running the following commands fixed the issue for me

npm config set proxy http://proxy.yourproxydomain.com:port
npm config set https-proxy http://proxy.yourproxydomain.com:port
npm config set strict-ssl false
npm config set registry https://registry.npmjs.org/

Answer 4

Actually the above is related to the network connectivity in side the server. When I've good connectivity in the server, the npm install gone good and didn't throw any error

Answer 5

I was using private npm registry and trying to install private npm module. Logging to npm local registry fixed it (used command npm --add-user)

Answer 6

SherylHohman's answer solved the issue I had, but only after I switched my internet connection. Intitially, I was on the hard-line connection at work, and I switched to the WiFi connection at work, but that still didn't work.

As a last resort, I switched my WiFi to a pocket-WiFi, and running the following worked well:

npm cache verify

npm install -g create-react-app

create-react-app app-name

Hope this helps others.