OS? Windows 8 Versions. Could not start watchman; falling back to NodeWatcher for file system events. Visit http://ember-cli.com/user-guide/#watchman for more info. angular-cli: 1.0.0-beta.16 node: 6.6.0 os: linux ia32 After instal angular-cli for below step npm install -g angular-cli ng new PROJECT_NAME cd PROJECT_NAME After given below command ng serve http://localhost:4200 and http://127.0.0.1: