2012 R2 Essential- Update to support auto-redirection of Windows Server 2012 R2 Essentials for Windows 10 client connector
Microsoft finally delivered Windowds 10 client connector for Windows 2012 R2 Essential, here they is link and more detailis:
https://support.microsoft.com/en-us/kb/3105885
This update enables the Windows 10 clients to be joined to the Windows Server 2012 R2 Essentials. Currently, you have to download and install the client connector manually on the Windows 10 client. This manual process will not be required after you apply this update to Windows Server 2012 R2.
Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
Method 1: Windows Update
This update is provided as an Optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update.
Method 2: Microsoft Download Center
This update is available for download from the Microsoft Download Center:
Download the Windows Server 2012 R2 package now.