Afin de mettre à jour le module nodejs安装n, mais l'erreur suivante a été signalée, pourquoi ?

C:\Windows\System32>npm i -g n
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\node.exe" "C:\node_modules\npm\bin\npm-cli.js" "i" "-g"
n"
npm ERR! node v6.11.0
npm ERR! npm  v3.10.10
npm ERR! code EBADPLATFORM

npm ERR! notsup Unsupported platform for n@2.1.7: wanted {"os":"!win32","arch":
any"} (current: {"os":"win32","arch":"x64"})
npm ERR! notsup Valid OS:    !win32
npm ERR! notsup Valid Arch:  any
npm ERR! notsup Actual OS:   win32
npm ERR! notsup Actual Arch: x64

npm ERR! Please include the following file with any support request:
npm ERR!     C:\Windows\System32\npm-debug.log