When we sometimes create a new project but can't create the project because of an error like the one below.

Here I have provided steps to resolve the issue.

Step 1
Run CMD as Run as administrator mode.

Step 2
Uninstall angular cli.
npm uninstall -g @angular/cli

Step 3
Remove npm package files from the appdata folder.

Step 4
Open Run option by pressing Windows + R key. Then type %appdata% and press OK.

Step 5
Open the npm folder from the Roaming folder that you got in explorer.

Step 6
Delete ng and ng.cmd files from the npm folder if exists.
Open node_modules folder from there and delete @angular and angular/cli folder if exists.

Step 7
Reinstall the angular cli
npm install -g @angular/cli

Create a new Project with the use of command

App is created and run with ng serve command like this