Today Microsoft posted their first cumulative update for Windows 8 and Windows Server 2012 and it is available in their Download Center.

This article describes the cumulative update for Windows 8 and for Windows Server 2012 that is dated November 2012. This cumulative update package includes performance and reliability improvements for Windows 8 and for Windows Server 2012. We recommend that you apply this cumulative update as part of your regular maintenance routines.

This cumulative update includes the following performance and reliability improvements:

  • Enable enterprise customers to customize the default lock screen.
  • Improves the performance when you wake the computer and when the computer is asleep, in order to improve battery life
  • Resolves an issue that may prevent Windows Store Apps from being installed fully
  • Other software updates and performance improvements

You can read more about the update at

There is an x86 and x64 version of the cumulative update:

If you have been updating your Windows 8/Windows Server 2012 installs regularly with Windows Update then the fixes combined in this single install should already be on your system.  Just look in your Windows Update history to see if the 2770917 update is installed.


It should have been installed in the November 2012 timeframe. If it is there then there is no need to install this update right now. The benefit of a cumulative update is down the road if you have a clean install of Windows 8/Windows Server 2012 just this one update will be installed to cover several previous updates.