Assume that you have a cluster that runs Windows Server 2012 or Windows Server 2012 R2. When you try to change the Cluster-Aware Updating (CAU) schedule by using the GUI, the time for the automatic update schedule is not changed, and the old time remains.
To resolve this issue, install update rollup 2919393 or 2919394. For more information about how to obtain this two update rollup packages, click one of the following article numbers to go to the articles in the Microsoft Knowledge Base:
2919393 Windows RT, Windows 8, and Windows Server 2012 update rollup: February 2014
2919394 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: February 2014
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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