We distribute apps via an Enterprise account, using an itms-services:// URL. This has always worked fine, but after installing the iOS 7.1 beta on our iPad it refuses to install. Instead we just get the generic Cannot connect to example.com message that iOS unhelpfully displays when there is any sort of problem downloading the app.
I’ve been unable to find anything here on SO, on Google or in the 7.1 release notes to suggest what could be causing the problem.