SSL Error CERT UNTRUSTED while using npm command

Question

I am trying  to install express framework using npm command but getting following error    error message is   E  myFindings nodejs programs node gt npm install -g express npm http GET https   registry npmjs org express npm ERR  Error  SSL Error  CERT UNTRUSTED npm ERR      at ClientRequest  lt anonymous gt   C  Program Files nodejs node modules npm node modules request main js 409 26  npm ERR      at ClientRequest g  events js 185 14  npm ERR      at ClientRequest EventEmitter emit  events js 88 17  npm ERR      at HTTPParser parserOnIncomingClient  as onIncoming   http js 1445 7  npm ERR      at HTTPParser parserOnHeadersComplete  as onHeadersComplete   http js 111 23  npm ERR      at CleartextStream socketOnData  as ondata   http js 1356 20  npm ERR      at CleartextStream CryptoStream  push  tls js 396 27  npm ERR      at SecurePair cycle  tls js 751 20  npm ERR      at EncryptedStream CryptoStream write  tls js 131 13  npm ERR      at Socket ondata  stream js 38 26  npm ERR    Error  SSL Error  CERT UNTRUSTED  npm ERR  You may report this log at  npm ERR       lt http   github com isaacs npm issues gt  npm ERR  or email it to  npm ERR       lt npm- googlegroups com gt   npm ERR  System Windows NT 6 1 7601 npm ERR  command  C   Program Files  nodejs    node exe   C   Program Files  nodejs  node modules  npm  bin  npm-cli js   install   -g   express  npm ERR  cwd E  myFindings nodejs programs node npm ERR  node -v v0 8 0 npm ERR  npm -v 1 1 32 npm ERR  message SSL Error  CERT UNTRUSTED npm ERR  npm ERR  Additional logging details can be found in  npm ERR      E  myFindings nodejs programs node npm-debug log npm ERR  not ok code 0   help me to sort out

User · Accepted Answer

I think I got the reason for the above error  It is the corporate proxy virtual private network  provided in order to work in the client network  Without that connection I frequently faced the same problem be it  maven build or npm install

User · Answer

I had same problem and finally I understood that my node version is old  For example  you can install the current active LTS node version in Ubuntu by the following steps   sudo apt-get update curl -sL https   deb nodesource com setup 10 x   sudo -E bash - sudo apt-get install nodejs -y   Installation instructions for more versions and systems can be found in the following link   https   github com nodesource distributions blob master README md

User · Answer

npm ERR  node -v v0 8 0 npm ERR  npm -v 1 1 32   Update your node js installation The following commands should do it  from here    sudo npm cache clean -f sudo npm install -g n sudo n stable     Edit  okay  if you really have a good reason to run an ancient version of the software  npm set ca null will fix the issue  It happened  because built-in npm certificate has expired over the years

User · Answer

Since i stumbled on the post via google  Try using npm ci it will be much than an npm install  From the manual   In short  the main differences between using npm install and npm ci are   The project must have an existing package-lock json or npm-shrinkwrap json  If dependencies in the package lock do not match those in package json  npm ci will exit with an error  instead of updating the package lock  npm ci can only install entire projects at a time  individual dependencies cannot be added with this command  If a node modules is already present  it will be automatically removed before npm ci begins its install  It will never write to package json or any of the package-locks  installs are essentially frozen

User · Answer

If you re behind a corporate proxy  try this setting for npm with your company s proxy   npm --https-proxy http   proxy company com install express -g

User · Answer

You can bypass https using below commands   npm config set strict-ssl false   or set the registry URL from https or http like below   npm config set registry  http   registry npmjs org     However  Personally I believe bypassing https is not the real solution  but we can use it as a workaround

User · Answer

Reinstall node  then update npm   First I removed node  apt-get purge node   Then install node according to the distibution  Docs here    Then   npm install npm latest -g

[node.js] SSL Error: CERT_UNTRUSTED while using npm command

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