Consider the following scenario:
You create a new user account, and then you use this account to log on to a computer that is running Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2.
The computer creates a roaming user profile on the server for this account.
You log off the computer, and then you use the same account to log on to another computer that is running Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2.
You right-click the Start buttonon the taskbar, or you press the Windows key + X keyboard shortcut.
In this scenario, the Start button shortcut menu does not appear.
To resolve this issue, install the November 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2.
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, see the Description of the standard terminology that is used to describe Microsoft software updates.