Windows 10 build 10122

Windows 10 build 10122 is an Insider Preview build of Windows 10. It was released to Windows Insiders on 20 May 2015 only for the Fast ring.

Bugs
During beta phase, in this build there are bugs with most apps like Feedback, Insider Hub, Windows Store Beta and Spartan.
 * Spartan Problem: It claims that you're offline even when you're connected to the internet.