ng Update Error: connect ECONNREFUSED 104.16.21.35:80 at Object._errnoException (util.js:992:11)

Question

• I am trying to do an angular update from angular 5 to angular 6.
• so I am following the below steps. Want to upgrade project from Angular v5 to Angular v6
• when I execute this commands ng update @angular/cli and ng update @angular/core I am facing the below errors.
• can you tell me how to fix it.
• providig my package.json below

C:\codebase\branches\project>ng update @angular/cli
Your global Angular CLI version (6.2.4) is greater than your local
version (1.7.4). The local Angular CLI version is used.

To disable this warning use "ng config -g cli.warnings.versionMismatch false".
events.js:183
      throw er; // Unhandled 'error' event
      ^

Error: connect ECONNREFUSED 104.16.21.35:80
    at Object._errnoException (util.js:992:11)
    at _exceptionWithHostPort (util.js:1014:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1186:14)

C:\codebase\branches\project>ng update @angular/core
Your global Angular CLI version (6.2.4) is greater than your local
version (1.7.4). The local Angular CLI version is used.

To disable this warning use "ng config -g cli.warnings.versionMismatch false".
events.js:183
      throw er; // Unhandled 'error' event
      ^

Error: connect ECONNREFUSED 104.16.21.35:80
    at Object._errnoException (util.js:992:11)
    at _exceptionWithHostPort (util.js:1014:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1186:14)

package.json

{
  "name": "project",
  "version": "1.0.0",
  "description": "project ",
  "author": "GEOIS project team ",
  "scripts": {
    "ng": "ng",
    "rimraf": "rimraf",
    "wintersmith": "wintersmith",
    "changelog": "standard-changelog",
    "start": "ng serve",
    "start:hmr": "ng serve --hmr",
    "start:aot": "ng serve --aot",
    "start:prod": "ng serve --prod",
    "start:prod:aot": "ng serve --prod --aot",
    "build": "npm run clean:dist && ng build",
    "build:prod": "npm run build -- --prod",
    "build:prod:aot": "npm run build:prod -- --aot",
    "build:ci": "npm run build:prod && npm run build:prod:aot",
    "build:L1": "npm run build:prod:aot -- --base-href \"/project/\"",
    "build:L3": "npm run build:prod:aot -- --base-href \"/L3/project/\"",
    "build:L4": "npm run build:prod:aot -- --base-href \"/L4/project/\"",
    "build:production": "npm run build:prod:aot -- --base-href \"/project/\"",
    "test": "ng test -sr",
    "test:coverage": "npm run clean:coverage && ng test -sr -cc",
    "lint": "ng lint",
    "lint:styles": "stylelint ./src/app/**/*.scss",
    "lint:ci": "npm run lint && npm run lint:styles",
    "pree2e": "webdriver-manager update --standalone false --gecko false",
    "e2e": "ng e2e",
    "clean": "npm cache clean && npm run rimraf -- node_modules doc typings coverage dist",
    "clean:dist": "npm run rimraf -- dist",
    "clean:coverage": "npm run rimraf -- coverage",
    "docs:build": "wintersmith build -C docs -o build/project",
    "docs:deploy": "npm run docs:build && gh-pages -d docs/build -r git@github.com:akveo/akveo.github.io.git -b master",
    "docs:serve": "wintersmith preview -C docs"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "5.2.0",
    "@angular/common": "5.2.0",
    "@angular/compiler": "5.2.0",
    "@angular/core": "5.2.0",
    "@angular/forms": "5.2.0",
    "@angular/http": "5.2.0",
    "@angular/platform-browser": "5.2.0",
    "@angular/platform-browser-dynamic": "5.2.0",
    "@angular/platform-server": "5.2.0",
    "@angular/router": "5.2.0",
    "@ng-select/ng-select": "^1.3.0",
    "@ngx-translate/core": "^10.0.2",
    "@ngx-translate/http-loader": "^3.0.1",
    "@swimlane/ngx-charts": "^8.0.2",
    "animate.css": "3.5.2",
    "bootstrap": "^3.3.7",
    "bootstrap-sass": "^3.3.7",
    "chart.js": "^2.7.2",
    "chroma-js": "1.3.3",
    "core-js": "2.4.1",
    "d3": "^5.4.0",
    "enhanced-resolve": "^3.3.0",
    "font-awesome": "4.7.0",
    "ionicons": "2.0.1",
    "jquery": "3.2.1",
    "jquery-slimscroll": "1.3.8",
    "lodash": "4.17.4",
    "moment": "^2.14.1",
    "ng2-completer": "1.3.1",
    "ng2-datetime": "^1.4.0",
    "ng2-select-compat": "^1.3.1",
    "ng2-slim-loading-bar": "4.0.0",
    "ng2-smart-table": "1.0.3",
    "ng2-toastr": "^4.1.2",
    "ngx-bootstrap": "^2.0.5",
    "node-sass": "^4.9.3",
    "normalize.css": "6.0.0",
    "roboto-fontface": "0.7.0",
    "rxjs": "^5.5.6",
    "tether": "^1.4.4",
    "zone.js": "0.8.11"
  },
  "devDependencies": {
    "@angular/cli": "^1.7.4",
    "@angular/compiler-cli": "5.2.0",
    "@types/fullcalendar": "2.7.40",
    "@types/jasmine": "2.5.38",
    "@types/jquery": "2.0.41",
    "@types/jquery.slimscroll": "1.3.30",
    "@types/lodash": "4.14.61",
    "@types/node": "6.0.69",
    "codelyzer": "3.0.1",
    "css-loader": "^0.28.11",
    "gh-pages": "0.12.0",
    "jasmine-core": "2.5.2",
    "jasmine-spec-reporter": "3.2.0",
    "karma": "1.4.1",
    "karma-chrome-launcher": "2.0.0",
    "karma-cli": "1.0.1",
    "karma-coverage-istanbul-reporter": "0.2.0",
    "karma-jasmine": "1.1.0",
    "karma-jasmine-html-reporter": "0.2.2",
    "npm-run-all": "4.0.2",
    "protractor": "5.1.0",
    "rimraf": "2.6.1",
    "standard-changelog": "1.0.1",
    "style-loader": "^0.21.0",
    "stylelint": "7.10.1",
    "ts-node": "2.1.2",
    "tslint": "5.2.0",
    "tslint-eslint-rules": "4.0.0",
    "tslint-language-service": "0.9.6",
    "typescript": "2.4.2",
    "typogr": "0.6.6",
    "underscore": "1.8.3",
    "wintersmith": "2.2.5",
    "wintersmith-sassy": "1.1.0"
  }
}


angular cli.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "project": {
    "name": "ng2-admin"
  },
  "apps": [
    {
      "root": "src",
      "outDir": "dist",
      "assets": [
        "assets",
        "favicon.ico"
      ],
      "index": "index.html",
      "main": "main.ts",
      "polyfills": "polyfills.ts",
      "test": "test.ts",
      "tsconfig": "tsconfig.app.json",
      "testTsconfig": "tsconfig.spec.json",
      "prefix": "app",
      "styles": [
        "../node_modules/roboto-fontface/css/roboto/sass/roboto-fontface.scss",
        "../node_modules/normalize.css/normalize.css",
        "../node_modules/font-awesome/scss/font-awesome.scss",
        "../node_modules/ionicons/scss/ionicons.scss",
        "../node_modules/bootstrap-sass/assets/stylesheets/_bootstrap.scss",
        "app/theme/theme.scss",
        "styles.scss"
      ],
      "scripts": [
        "../node_modules/jquery/dist/jquery.js",
        "../node_modules/jquery-slimscroll/jquery.slimscroll.js",
        "../node_modules/tether/dist/js/tether.js",
        "../node_modules/bootstrap/dist/js/bootstrap.js",
        "../node_modules/chroma-js/chroma.js"
      ],
      "environmentSource": "environments/environment.ts",
      "environments": {
        "dev": "environments/environment.ts",
        "prod": "environments/environment.prod.ts"
      }
    }
  ],
  "e2e": {
    "protractor": {
      "config": "./protractor.conf.js"
    }
  },
  "lint": [
    {
      "project": "src/tsconfig.app.json"
    },
    {
      "project": "src/tsconfig.spec.json"
    },
    {
      "project": "e2e/tsconfig.e2e.json"
    }
  ],
  "test": {
    "karma": {
      "config": "./karma.conf.js"
    }
  },
  "defaults": {
    "styleExt": "scss",
    "component": {
    }
  }
}

Answer 1

This is usually an npm issue with a proxy, not really a CLI issue.

Take a look at Using npm behind corporate proxy .pac

Basically, you need to make sure you have configured npm to work through your proxy, then ng cli should have not issues connecting.

npm config set proxy "http://domain\\username:password@servername:port/"

Please note this saves you password on the config file, so after you are done you may want to remove the saved password like so"

npm config delete proxy