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I am trying to install npm so I can install less. I just went to the node.js website and installed node. however, when i type npm in the command prompt i get the error:

Error: Failed to replace env in config: ${APPDATA} at C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:429:13 etc.

Any suggestions?

I think node installed because node -v yeilds v0.12.7

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  • I think your path might not be set up right. Try over here: stackoverflow.com/questions/27864040/… Commented Aug 18, 2015 at 20:10
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    thanks @ZacharyDow for the hints. i followed that and then used this link that i had seen before github.com/npm/npm/issues/7468 Commented Aug 18, 2015 at 20:39
  • No problem, so it's working for you with that fix? Commented Aug 18, 2015 at 20:40
  • @ZacharyDow I think so, it seems to work. when I typed npm install -g less some text appears. however it is not recognizing lessc as a command. is there a way to check? Commented Aug 18, 2015 at 20:49
  • when i just type npmmy cmd shows Usabe: npm <command> so that looks good i think Commented Aug 18, 2015 at 20:50

1 Answer 1

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You need to configure your 'AppData' environment variable.

https://github.com/npm/npm/issues/7468

I just created a environment variable called APPDATA with the value like this:

variable : APPDATA

value :C:\Users\my_user_name\AppData\Roaming\npm;npm

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As of Nov 2016, it appears the npmrc file appends the npm folder. The above value caused all kinds of folder problems. Setting APPDATA to just c:\users\<username>\AppData\Roaming worked. And APPDATA should be a User (not system) environment variable

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