npm ERR! Windows_NT 10.0.10586
npm ERR! argv "C:\Software\Program Files\JetBrains\WebStorm 2017.1.4\nodeJs\node.exe" "C:\Software\Program Files\JetBrains\WebStorm 2017.1.4\nodeJs\node_modules\npm\bin\npm-cli.js" "install" "yarn" "-g"
npm ERR! node v6.11.0
npm ERR! npm v3.10.10
npm ERR! path C:\Software\Program Files\JetBrains\WebStorm 2017.1.4\nodeJs\global\yarn
npm ERR! code EISDIR
npm ERR! errno -4068
npm ERR! syscall open
npm ERR! eisdir EISDIR: illegal operation on a directory, open 'C:\Software\Program Files\JetBrains\WebStorm 2017.1.4\nodeJs\global\yarn'
npm ERR! eisdir This is most likely not a problem with npm itself
npm ERR! eisdir and is related to npm not being able to find a package.json in
npm ERR! eisdir a package you are trying to install.
npm ERR! Please include the following file with any support request:
npm ERR! C:\Windows\system32\npm-debug.log
The above is the error log when npm installs yarn. I have tried reinstalling nodejs and running cmd with administrative privileges, but none of them succeeded. How to solve it?
Maybe npm version problem, try reinstalling npm
Try npm uninstall npm
Then npm install -g npm