Troubleshooting

Many common problems can be solved with one of these steps:

Try the latest stable version of node

Node 0.4 and 0.6 are no longer supported.

If you're experiencing issues while using a version of node which is unsupported (e.g 0.4.x or 0.6.x) or unstable (odd numbered versions e.g. 0.7.x, 0.9.x, 0.11.x), it's very possible your issue will be fixed by simply using the latest stable version of node.

See what version of node you're running:

node -v

Updating node on Linux

For some Linux distributions (Debian/Ubuntu and RedHat/CentOS), the latest node version provided by the distribution may lag behind the stable version. Here are instructions from NodeSource on getting the latest node.

Updating node on Windows

Install the latest msi from https://nodejs.org/download

Updating node on OSX

Install the latest package from https://nodejs.org/download

or if you are using homebrew

brew install node

Installing or updating node without elevated permissions

If you want to install/update node on a unix-like system but don't have root permissions, here are a number of ways to do that!

Try the latest stable version of npm

See what version of npm you're running:

npm -v

Upgrading on *nix (OSX, Linux, etc.)

You can upgrade to the latest version of npm using:

npm install -g npm@latest

Note: You may need to prefix this command with sudo

Upgrading on Windows

By default, npm is installed alongside node in C:\Program Files (x86)\nodejs. npm's globally installed packages (including, potentially, npm itself) are stored separately in a user-specific directory (which is currently C:\Users\<username>\AppData\Roaming\npm). Because the installer puts C:\Program Files (x86)\nodejs before C:\Users\<username>\AppData\Roaming\npm on your PATH, it will always use version of npm installed with node instead of the version of npm you installed using npm -g install npm@<version>. To get around this, you can do one of the following:

• Option 1: edit your Windows installation's PATH to put C:\Users\<username>\AppData\Roaming\npm before C:\Program Files (x86)\nodejs. Remember that you'll need to restart cmd.exe (and potentially restart Windows) when you make changes to PATH or how npm is installed.

• Option 2: remove both of

  • C:\Program Files (x86)\nodejs\npm
  • C:\Program Files (x86)\nodejs\npm.cmd

• Option 3: navigate to C:\Program Files (x86)\nodejs with cmd.exe and then run the installation without -g:

npm install npm

If you installed npm with the node.js installer, after doing one of the previous steps go into C:\Program Files\nodejs\node_modules\npm and copy the file named npmrc in the new npm folder, which should be C:\Users\<username>\AppData\Roaming\npm\node_modules\npm. This will tell the new npm where the global installed packages are. See the point below for more details.

(See also the point below if you're running Windows 7 and don't have the directory C:\Users\<username>\AppData\Roaming\npm.)

A brief note on the built-in Windows configuration

The Node installer installs, directly into the npm folder, a special piece of Windows-specific configuration that tells npm where to install global packages. When npm is used to install itself, it is supposed to copy this special builtin configuration into the new install. There was a bug in some versions of npm that kept this from working, so you may need to go in and fix that up by hand. If %APPDATA%\npm\node_modules\npm\npmrc does not exist, you'll need to create it yourself. (%APPDATA% defaults to <X>:\Users\<user>\AppData\Roaming). All you need to put in that file is:

prefix=${APPDATA}/npm

Incidentally, if you would prefer that packages not be installed to your roaming profile (because you have a quota on your shared network, or it makes logging in or out from a domain sluggish), you can put it in your local app data instead:

prefix=${LOCALAPPDATA}/npm

...as well as copying %APPDATA%\npm to %LOCALAPPDATA%\npm (and updating your %PATH%, of course).

Everyone who works on npm knows that this process is complicated and fraught, and we're working on making it simpler. Stay tuned.

If your npm is broken

Reinstall npm:

curl https://www.npmjs.org/install.sh | sh

If you're on Windows and you have a broken installation, the easiest thing to do is to reinstall node from the official installer (remember this note).

Try clearing the npm cache

Sometimes npm's cache gets confused. You can reset it using:

npm cache clean

---

Common Errors

No compatible version found

You have an outdated npm. Please update to the latest stable npm.

Permission Error

npm ERR! code EPERM

npm ERR! code EACCES

• Fix the permissions of your cache with sudo chown -R $(whoami) "$HOME/.npm".
• Try again with sudo. e.g. sudo npm install express -g. (You'll probably need to fix cache permissions afterwards, as above).
• Reinstall node so it doesn't require sudo.

Travis projects using 0.8 can't upgrade to npm 2

In your .travis.yml replace this:

before_install:
- npm install -g npm@latest

with this:

before_install:
- '[ "${TRAVIS_NODE_VERSION}" != "0.8" ] || npm install -g [email protected]'
- npm install -g npm@latest

This suggestion is based on this Travis issue and comes courtesy @simondean.

Error: ENOENT, stat 'C:\Users\<user>\AppData\Roaming\npm' on Windows 7

This is a consequence of joyent/node#8141, and is an issue with the Node installer for Windows. The workaround is to ensure that C:\Users\<user>\AppData\Roaming\npm exists and is writable with your normal user account.

No space

npm ERR! Error: ENOSPC, write

You are trying to install on a drive that either has no space, or has no permission to write.

• Free some disk space or
• Set the tmp folder somewhere with more space: npm config set tmp /path/to/big/drive/tmp or
• Build Node yourself and install it somewhere writable with lots of space.

No git

npm ERR! not found: git
ENOGIT

You need to install git.

npm only uses git: and ssh+git: URLs for GitHub repos, breaking proxies

@LaurentGoderre fixed this with some Git trickery:

I fixed this issue for several of my colleagues by running the following two commands:

git config --global url."https://github.com/".insteadOf [email protected]:
git config --global url."https://".insteadOf git://

One thing we noticed is that the .gitconfig used is not always the one expected so if you are on a machine that modified the home path to a shared drive, you need to ensure that your .gitconfig is the same on both your shared drive and in c:\users\[your user]\

SSL Error

npm ERR! Error: 7684:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:openssl\ssl\s23_clnt.c:787:

You are trying to talk SSL to an unencrypted endpoint. More often than not, this is due to a proxy configuration error (see also this helpful, if dated, guide). In this case, you do not want to disable strict-ssl – you may need to set up a CA / CA file for use with your proxy, but it's much better to take the time to figure that out than disabling SSL protection.

npm ERR! Error: SSL Error: CERT_UNTRUSTED

npm ERR! Error: SSL Error: UNABLE_TO_VERIFY_LEAF_SIGNATURE

This problem will happen if you're running Node 0.6. Please upgrade to node 0.8 or above. See this post for details.

You could also try these workarounds: npm config set ca "" or npm config set strict-ssl false

npm ERR! Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN

npm no longer supports its self-signed certificates

Either:

• upgrade your version of npm npm install npm -g --ca=""
• tell your current version of npm to use known registrars npm config set ca=""

Not found / Server error

npm http 404 https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.7.0.tgz
npm ERR! fetch failed https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.7.0.tgz
npm ERR! Error: 404 Not Found

npm http 500 https://registry.npmjs.org/phonegap

• It's most likely a temporary npm registry glitch. Check npm server status and try again later.
• If the error persists, perhaps the published package is corrupt. Contact the package owner and have them publish a new version of the package.

Invalid JSON

Error: Invalid JSON

npm ERR! SyntaxError: Unexpected token <

npm ERR! registry error parsing json

• Possible temporary npm registry glitch, or corrupted local server cache. Run npm cache clean and/or try again later.
• This can be caused by corporate proxies that give HTML responses to package.json requests. Check npm's proxy configuration.
• Check that it's not a problem with a package you're trying to install (e.g. invalid package.json).

Many ENOENT / ENOTEMPTY errors in output

npm is written to use resources efficiently on install, and part of this is that it tries to do as many things concurrently as is practical. Sometimes this results in race conditions and other synchronization issues. As of npm 2.0.0, a very large number of these issues were addressed. If you see ENOENT lstat, ENOENT chmod, ENOTEMPTY unlink, or something similar in your log output, try updating npm to the latest version. If the problem persists, look at npm/npm#6043 and see if somebody has already discussed your issue.

cb() never called! when using shrinkwrapped dependencies

Take a look at issue #5920. We're working on fixing this one, but it's a fairly subtle race condition and it's taking us a little time. You might try moving your npm-shrinkwrap.json file out of the way until we have this fixed.

Other

• Some strange issues can be resolved by simply running npm cache clean and trying again.
• When you're setting configs, you're doing it for your OWN user. If you're using sudo you're running the command as the ROOT user. Try rerunning any npm config commands with sudo