unable to add platform 'browser' to cordova project

I'm following the steps provided under 'Get Started Fast' section in Cordova official page (https://cordova.apache.org/).

After installing cordova and creating the project, while executing the command to add 'browser' platform (Command: cordova platform add browser), i'm getting the following error:

Error: Failed to fetch platform browser
Probably this is either a connection problem, or platform spec is incorrect.
Check your connection and platform name/version/URL.
Error: shasum check failed for C:\Users\KH293\AppData\Local\Temp\npm-11160-c84d1
e1d\registry.npmjs.org\cordova-browser-\cordova-browser-4.1.0.tgz
Expected: a0878f7a9cfca80c5e013cb3e53487b73e9c8350
Actual: 75079065e5cd50aa6743cbd85317617053fb20c6
From: https://registry.npmjs.org/cordova-browser/-/cordova-browser-4.1.0.tgz

Additional notes: 1)I tried re-installing cordova and adding the platform, still it didn't work.
2)Adding 'android' platform is successful.