ERRORS in angular-cli installation

[OsnatShoshani]

I am installing Angular/Cli npm on Windows 10 I have downloaded latested Nodejs & intalled then I am trying to install Angular/Cli but after some time it is show error message :
npm ERR! Windows_NT 10.0.10586
Here is screen shot :

C:\Users\pb5>npm install -g @angular/cli
npm ERR! Windows_NT 10.0.10586
npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "install" "-g" "@angular/cli"
npm ERR! node v6.11.3
npm ERR! npm v3.10.10
npm ERR! code SELF_SIGNED_CERT_IN_CHAIN

npm ERR! self signed certificate in certificate chain
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR! https://github.com/npm/npm/issues

npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\pb5\npm-debug.log

Please let me know how can I install & create my first Project.

Thanks,

1. Update your Node.js to the latest version
2. Make sure you have the latest version of npm, execute npm i -g npm
3. Make sure that you can access this website with your browser without any SSL warning npm registry
4. If this doesn't solve your problem. please, read this article

[OsnatShoshani]

I tried it but didn't work

[filipesilva]

This seems like a problem with your node/npm and not with Angular CLI.

Please have a look at the common errors page, npm issue tracker, or open a new issue if the problem you are experiencing isn't known.

[filipesilva]

If I had to bet it's probably a proxy problem.

[OsnatShoshani]

I tried all the options but didn't ןnstall the angular/cli

[Alon-Or]

I got the solution from: https://github.com/npm/npm/issues/7519

my answer is here:

In Nodejs 9.3.0 npm@5.6.0 behind a Fortigate FW with SSL inspection I had problems installing angular/cli, was getting "npm ERR! code SELF_SIGNED_CERT_IN_CHAIN"
So I did:
npm config set strict-ssl false
then:
npm install npm -g --ca NULL
and now I'm able to install @angular/cli@1.63
with
npm install -g @angular/cli

[Gonzalo-Orellana]

Hi!... I solved it by changing the internet network to which I was connected, since the error appeared to me when I was on a network with proxy. I shared and my cell phone internet and holy remedy.

[angular-automatic-lock-bot]

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