Windows RT, Windows 8, and Windows Server 2012 update rollup: May 2014

Applies to: Windows 8 EnterpriseWindows 8 ProWindows 8


This article describes the update rollup for Windows RT, Windows 8, and Windows Server 2012 that is dated May 2014. This update rollup package includes performance and reliability improvements. We recommend that you apply this update rollup as part of your regular maintenance routines. Check out the fixed issues in this update.

Issues that this update fixes

This update package fixes the issues that are documented in the following Microsoft Knowledge Base (KB) articles:
  • 2949807 Installer freezes when you install an update that uses WUSA in Windows 8 or Windows Server 2012
  • 2956020 Live migration fails and the error message has insufficient detail on Windows Server 2012
  • 2957654 "0xc000000E" Stop error when a disk is suddenly removed from the PNP service in Windows 8 or Windows Server 2012
  • 2957560 Computer that is running Windows freezes after stress testing in iSCSI initiator for many hours
  • 2957623 Cannot access shared files or folders on a drive in Windows Server 2012 or Windows Server 2012 R2

More Information

Update information

How to obtain the update

Windows Update
This update is available from Windows Update.

  1. This update is provided as an important update.
  2. If you select the Install updates automatically (recommended) Windows Update setting, this update is installed automatically.
  3. If you select other Windows Update settings, we highly recommend that you install this update through Windows Update immediately.
Microsoft Download Center
You can also obtain the stand-alone update package through the Microsoft Download Center. For more information, go to the Microsoft Download Center, and then search for KB2955163.


To apply this update, you must be running Windows RT, Windows 8, or Windows Server 2012.

Restart information

You must restart the computer after you apply this update.

Update replacement information

This update does not replace any previously released update.


For more information about Windows Update, go to the following Microsoft websites:For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates