What / Why

I can't do anything with the command npm. I've tried to uninstall and update npm even install again, but any command of npm shows me the following error below:

i'm using on Windows 7
.

How

Current Behavior

PS C:\Windows\system32> npm --version
Error: Failed to replace env in config: ${APPDATA}
at C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:415:13
at String.replace ()
at envReplace (C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:411:12)
at parseField (C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:389:7)
at C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:330:24
at Array.forEach ()
at Conf.add (C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:328:23)
at ConfigChain.addString (C:\Program Files\nodejs\node_modules\npm\node_modules\config-chain\index.js:244:8)
at Conf. (C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:316:10)
at C:\Program Files\nodejs\node_modules\npm\node_modules\graceful-fs\graceful-fs.js:115:16
TypeError: Cannot read property 'loaded' of undefined
at exit (C:\Program Files\nodejs\node_modules\npm\lib\utils\error-handler.js:97:27)
at errorHandler (C:\Program Files\nodejs\node_modules\npm\lib\utils\error-handler.js:216:3)
at C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js:78:20
at cb (C:\Program Files\nodejs\node_modules\npm\lib\npm.js:225:22)
at C:\Program Files\nodejs\node_modules\npm\lib\npm.js:263:24
at C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:81:7
at Array.forEach ()
at Conf. (C:\Program Files\nodejs\node_modules\npm\lib\config\core.js:80:13)
at Conf.f (C:\Program Files\nodejs\node_modules\npm\node_modules\once\once.js:25:25)
at Conf.emit (events.js:223:5)
C:\Program Files\nodejs\node_modules\npm\lib\utils\error-handler.js:97
var doExit = npm.config.loaded ? npm.config.get('_exit') : true
^

TypeError: Cannot read property 'loaded' of undefined
at exit (C:\Program Files\nodejs\node_modules\←[4mnpm←[24m\lib\utils\error-handler.js:97:27)
at process.errorHandler (C:\Program Files\nodejs\node_modules\←[4mnpm←[24m\lib\utils\error-handler.js:216:3)
←[90m at process.emit (events.js:223:5)←[39m
←[90m at process._fatalException (internal/process/execution.js:150:25)←[39m
6.13.4

Steps to Reproduce

• npm --version
• npm install
• npm uninstall sax --save