I'm trying to setup development environment of truffle but I got the following error when running npm install -g truffle-expect truffle-config web3 on Windows 10 enterprise N on Azure.

PS C:\Windows\system32> npm install -g truffle-expect truffle-config web3

> [email protected] postinstall C:\Users\wanxxx\AppData\Roaming\npm\node_modules\web3
> lerna bootstrap

'lerna' is not recognized as an internal or external command,
operable program or batch file.
+-- [email protected]
`-- [email protected]

npm ERR! Windows_NT 10.0.15063
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "ins
tall" "-g" "truffle-expect" "truffle-config" "web3"
npm ERR! node v6.11.1
npm ERR! npm  v3.10.10

npm ERR! [email protected] postinstall: `lerna bootstrap`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] postinstall script 'lerna bootstrap'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the web3 package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     lerna bootstrap
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs web3
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls web3
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     C:\Windows\system32\npm-debug.log

How to resolve the issue? I can install everything on Windows 10 professional on my laptop.

3 Answers 3


Why don't you simply run npm install -g truffle to install truffle,, with TestRPC as your Ethereum client, you can install TestRPC using the command npm install -g ethereumjs-testrpc

It worked for me this way

  • I did run npm install -g truffle before npm install -g truffle-expect truffle-config web3. I followed an instruction which needs to do both these steps. The truffle init cannot run right now (popup a js message box) so I thought it's caused by the failed installation.
    – dc7a9163d9
    Commented Jul 21, 2017 at 5:06
  • Did you install windows build tools? if not try npm install -g –production windows-build-tools,, and can you copy/ past the message that you get when you run truffle init
    – Jamal N
    Commented Jul 21, 2017 at 5:27
  • I cannot reproduce the error message now. Now truffle init finished without any error.
    – dc7a9163d9
    Commented Jul 21, 2017 at 19:58

A recent beta.6 change to the postinstall script path for lerna fails on Windows. Until it's fixed you can npm install lerna then npm install [email protected].


I had a bit of an issue with this a few days ago when updating truffle. I used yarn instead and didn't have any issues. npm has been really finicky lately for me...

the command with yarn would be:

yarn global add truffle

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