Error : 'express' is not recognized as an internal or external command, operable program or batch file.

[Derek Barnes]

Hey all, 

I'm completely new to Express and Node.js in general. I'm working through the book "Sams Teach Yourself Node.js in 24 Hours". 

Everything is fine until Ch. 6 which says to install Express:

npm install -g express

That seems to go fine...bunch of stuff looks like it's installing. I check the folder it has installed to (C:\Users\<myusername>\AppData\Roaming\npm\node_modules\express) and there are a bunch of files as expected.

Next I type:

express express_example

...and get the error:

'express' is not recognized as an internal or external command, operable program or batch file. 

I'm working under Windows 7 Enterprise.

Any thoughts why I can't get this to work?

[greelgorke]

you should repost it in the nodejs group since it's a general node/npm issue not an express issue: https://groups.google.com/forum/?fromgroups#!forum/nodejs

[Paul Vencill]

I think the command is different for windows, but I'm not on a windows env so I'm not sure what it should be

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[Angel Java Lopez]

Ah!

Maybe you have not NPM global modules in your path

Try add c:\Users\<youruser>\AppData\Roaming\npm to your path

I had a similar issue in one machine, Windows 8. I installed node.js with user A, I can use Node.js with user B, and NPM too. But in User B, I had to manually add the above folder to my path.

Angel "Java" Lopez

@ajlopez

[Derek Barnes]

Yup...this was it. Thanks so much!

[kikit]

I have facing the same problem and also follow the instruction given by Paul but i still getting the same error...... Plz help ...

[Jonathan Ong]

you want to install the generator now: https://github.com/expressjs/generator#quick-start

[@nk]

Hi,

try to run command

npm install -g express-generator

this will install additional files for Express 4.X

then run the command prompt as administrator

and try to execute express command to see it works

express -h

It worked for me

if it doesn't works

reinstall node.js 

and try again.

for more information check out this http://cwbuecheler.com/web/tutorials/2013/node-express-mongo/