Try:

npm install -g express-generator@3

That solved problem for me.

Edit: for version 4

npm install express-generator -g

Here's what to type in the command line to make it work in windows:

npm install express-generator -g

[Source: http://expressjs.com/starter/generator.html]

With the release of Express 4.0.0 it looks like you need to do

 npm install -g express-generator.

We need to set path for express global directory

C:\Users[User_Name]\AppData\Roaming\npm\

After add a new path, please reopen the CMD console

Tried all of these and never worked. A repair of Node.js by kicking of installation and selecting repair option does the magic.

Cheers

I was able to fix this with:

npm install express-generator -g

Express is loaded someplace else and not in the windows path environment variable. You need to find were express.exe is installed and add the path. Maybe something like ;"C:\Program Files\Express\bin";

I have the same problem and understand the solution, but i can´t undestand why, running npm install -g express, express.bat isn´t added automatically to Path.

Running with npm install -g express have the same result. Download packages and store in node_modules, but express.bat isn´t added to path.

Run the node command prompt as administrator and then install express globaly
npm install -g express
and then go to folder where you want to install express generator, open command prompt there and run this command
npm install express-generator, it will then fix the issue

I have tried out all above solutions, but its did't worked for me, finally I have re-installed the node.jswith newer version and started to express install process again. Its worked for me.

npm install -g express
npm install -g express-generator

What command are you using to open the directory?

That error means CMD can't find the "express" executable in the current directory.

Use the "PUSHD" command or "CD /D" instead of "CD"

@Echo OFF
PUSHD "D:\myproject\express" || (Echo bad folder)
express.exe "site"
Pause&Exit

Running "npm install express" and "npm install express-generator" from your project directory will resolve the issue (if that helps).

But, this doesn't solve the problem of being global.

What worked for me was:

I used the windows command prompt instead of the node.js command prompt.

In windows 10 simply type in the windows search bar for "node"

You see a node.js desktop app and a node js command prompt.

Choose the "node js command prompt"

Type in the command prompt

npm install express-generator -g

Then navigate somewhere and type in:

express your-website-text-here -e

A directory with express files will be generated. Also now you won't see the express error.