getting 400 bad request error while installing webpack npm package - node.js

Question

Error Log info :
0 info it worked if it ends with ok
1 verbose cli [ 'C:\Program Files\nodejs\node.exe',
1 verbose cli 'C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js',
1 verbose cli 'install',
1 verbose cli '--save-dev',
1 verbose cli 'webpack' ]
2 info using npm#5.0.1
3 info using node#v6.10.2
4 silly install loadCurrentTree
5 silly install readLocalPackageData
6 http fetch GET 400 https://registry.npmjs.org/webpack 238ms
7 silly fetchPackageMetaData error for webpack#latest 400 Bad Request ( The data is invalid. ): webpack#latest
8 verbose stack Error: 400 Bad Request ( The data is invalid. ): webpack#latest
8 verbose stack at fetch.then.res (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\pacote\lib\fetchers\registry\fetch.js:36:19)
8 verbose stack at tryCatcher (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\util.js:16:23)
8 verbose stack at Promise._settlePromiseFromHandler (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:512:31)
8 verbose stack at Promise._settlePromise (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:569:18)
8 verbose stack at Promise._settlePromise0 (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:614:10)
8 verbose stack at Promise._settlePromises (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\promise.js:693:18)
8 verbose stack at Async._drainQueue (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\async.js:133:16)
8 verbose stack at Async._drainQueues (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\async.js:143:10)
8 verbose stack at Immediate.Async.drainQueues (C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\node_modules\bluebird\js\release\async.js:17:14)
8 verbose stack at runCallback (timers.js:666:20)
8 verbose stack at tryOnImmediate (timers.js:639:5)
8 verbose stack at processImmediate [as _immediateCallback] (timers.js:611:5)
9 verbose cwd D:\2017\ReactJSProject
10 verbose Windows_NT 6.1.7601
11 verbose argv "C:\Program Files\nodejs\node.exe" "C:\Users\wf70\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js" "install" "--save-dev" "webpack"
12 verbose node v6.10.2
13 verbose npm v5.0.1
14 error code E400
15 error 400 Bad Request ( The data is invalid. ): webpack#latest
16 verbose exit [ 1, true ]

Answer 1

Try the Below :
Option 1
Open Command prompt as admin
npm uninstall -g webpack#latest
npm cache clean
npm config set strict-ssl false
npm install -g webpack#latest
OR :
Option 2
Open Command prompt as admin
npm uninstall -g webpack#latest
npm cache clean
npm config set proxy="http://proxy.example.com:8080"
npm config set https-proxy="http://proxy.example.com:8080"
npm config set strict-ssl false
npm install -g webpack#latest
If you get the error reason: write EPROTO try,
npm config set proxy="http://proxy.example.com:8080"
npm config set https-proxy="http://proxy.example.com:8080"
Follow Option 2
If all the above fails try to install the latest stable version of node & npm.