Microsoft has now pushed a new cumulatve update KB3170411 to Release Preview Ring Insiders on Windows 10 version 1511. The update takes the Windows 10 version to Build 10586.456. The Build brings lots of fixes and improvements with itself that you can read in detailed changelog below.

Windows 10 Build 10586.456 Changelog:

Today we have released Windows 10 Insider Preview Build 10586.456 (KB3170411) to Windows Insiders in the Release Preview ring. This update includes quality improvements. No new operating system features are being introduced in this update.Key changes include:

· Improved reliability in a number of areas including Windows Media player, Internet Explorer 11, Windows Explorer, Miracast, and Windows kernel.

· Fixed an issue with some users noticing a black screen instead of the lock screen, when resuming from connected standby.

· Fixed issue where the DirectAccess Disconnect button appears sometimes even when the connection is not fully established.

· Fixed issue where local user accounts weren’t locked out after a number of failed sign in attempts.

· Improved support for playback of video in certain applications that did not render the video while the audio continued after resuming from sleep.

· Fixed issue where the Windows Phone sometimes loses user authentication certificates after upgrading to Windows 10 Mobile.

· Improved support to honor the data backup settings of applications on Windows 10 Mobile.

· Fixed issue where Microsoft Silverlight based application won’t install on Windows 10 Mobile, after joining Azure Active Directory.

· Fixed additional issues in .NET, Windows Kernel, Windows Update, Authentication, revised daylight saving time, support for PDF files, Bluetooth, Microsoft Edge, Internet Explorer, Networking and Wi-Fi connectivity.