npm install error ( npm install -g angular-cli ) in windows 10

Question

node -v

v4.5.0

npm -v

5.0.1

Has anyone faced this kind of issue while installing angular-cli in windows 10?

Answer 1

Try the following:

step 0: run this command

npm uninstall -g @angular/cli
npm cache clean

step 1: delete this folder: C:\Users\%YOUR-USERNAME%\AppData\Roaming\npm

step 2: uninstall Nodejs from Windows

step 3: restart your PC

step 4: install a fresh copy of Nodejs from here: https://nodejs.org/en/

step 5: install the CLI globally

npm install -g @angular/cli@latest

Answer 2

try this :

$ npm remove -g angular-cli
$ npm cache clean
$ npm install -g angular-cli

Answer 3

Check the path(npm -v, node -v)ie for Setting Path variable https://stackoverflow.com/a/32159233/4720950

User Variable C:\Users\Username\AppData\Roaming\npm 
System Variable C:\Program Files\nodejs

Restart System & update,clean npm https://stackoverflow.com/a/45020014

npm install npm@latest -g
npm cache clean

Uninstall prev angular cli and then install angular cli again

npm uninstall -g angular-cli
npm install -g @angular/cli