0 info it worked if it ends with ok 1 verbose cli [ 'C:\\Program Files (x86)\\nodejs\\\\node.exe', 1 verbose cli 'C:\\Program Files (x86)\\nodejs\\node_modules\\npm\\bin\\npm-cli.js', 1 verbose cli 'install', 1 verbose cli 'expressvalidator' ] 2 info using npm@1.3.5 3 info using node@v0.10.15 4 verbose node symlink C:\Program Files (x86)\nodejs\\node.exe 5 warn package.json MultiWebRTC@0.0.2-1 No repository field. 6 warn package.json MultiWebRTC@0.0.2-1 No README data 7 warn package.json consolidate@0.9.1 No repository field. 8 warn package.json mustache@0.7.2 No repository field. 9 verbose readDependencies using package.json deps 10 verbose cache add [ 'expressvalidator', null ] 11 verbose cache add name=undefined spec="expressvalidator" args=["expressvalidator",null] 12 verbose parsed url { protocol: null, 12 verbose parsed url slashes: null, 12 verbose parsed url auth: null, 12 verbose parsed url host: null, 12 verbose parsed url port: null, 12 verbose parsed url hostname: null, 12 verbose parsed url hash: null, 12 verbose parsed url search: null, 12 verbose parsed url query: null, 12 verbose parsed url pathname: 'expressvalidator', 12 verbose parsed url path: 'expressvalidator', 12 verbose parsed url href: 'expressvalidator' } 13 silly lockFile a5444023-expressvalidator expressvalidator 14 verbose lock expressvalidator C:\Users\Administrator\AppData\Roaming\npm-cache\a5444023-expressvalidator.lock 15 silly lockFile a5444023-expressvalidator expressvalidator 16 silly lockFile a5444023-expressvalidator expressvalidator 17 verbose addNamed [ 'expressvalidator', '' ] 18 verbose addNamed [ null, '*' ] 19 silly lockFile d3e19a5e-expressvalidator expressvalidator@ 20 verbose lock expressvalidator@ C:\Users\Administrator\AppData\Roaming\npm-cache\d3e19a5e-expressvalidator.lock 21 silly addNameRange { name: 'expressvalidator', range: '*', hasData: false } 22 verbose url raw expressvalidator 23 verbose url resolving [ 'https://registry.npmjs.org/', './expressvalidator' ] 24 verbose url resolved https://registry.npmjs.org/expressvalidator 25 info trying registry request attempt 1 at 07:59:33 26 http GET https://registry.npmjs.org/expressvalidator 27 http 404 https://registry.npmjs.org/expressvalidator 28 silly registry.get cb [ 404, 28 silly registry.get { server: 'CouchDB/1.3.0 (Erlang OTP/R15B03)', 28 silly registry.get date: 'Wed, 07 Aug 2013 23:59:35 GMT', 28 silly registry.get 'content-type': 'application/json', 28 silly registry.get 'content-length': '52', 28 silly registry.get 'cache-control': 'must-revalidate' } ] 29 silly lockFile d3e19a5e-expressvalidator expressvalidator@ 30 silly lockFile d3e19a5e-expressvalidator expressvalidator@ 31 error 404 'expressvalidator' is not in the npm registry. 31 error 404 You should bug the author to publish it 31 error 404 31 error 404 Note that you can also install from a 31 error 404 tarball, folder, or http url, or git url. 32 error System Windows_NT 6.1.7600 33 error command "C:\\Program Files (x86)\\nodejs\\\\node.exe" "C:\\Program Files (x86)\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "expressvalidator" 34 error cwd C:\xampp\htdocs\demo 35 error node -v v0.10.15 36 error npm -v 1.3.5 37 error code E404 38 verbose exit [ 1, true ]