Windows 8.1 Apps having trouble accessing internet via proxy
I'm using Windows 8.1 and while most of the apps work totally fine, few apps like fb, twitter, the hindu, espn etc. have trouble connecting to internet via institute proxy. Have checked the app settings to see if proxy settings can be incorporated individually in each app but that didn't help either. Please suggest what could be the issue is and how to solve it? Thank you.
Use Authenticated Proxy Servers to fix Windows Store Apps Installation errors
Try to reset the app cache, go to Start Screen and type WSReset.exe and hit Enter. If that doesn't helps, try creating a new user account and see if that helps.
Hope this helps, Good luck
Please try as Kapil suggested and Can you sign in directly to twitter, facebook via web UI, its just to ensure the institute haven't blocked these apps as some of the offices block such social apps....