Consider the following scenario:
You run multiple applications on a Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2-based computer.
You connect an external touch-capable monitor to the computer when the applications are running.
In this scenario, the application stops responding to touch.
This issue occurs because a race condition occurs when initializing the touch input.
How to obtain this update
To resolve this issue, we have released update rollup 2975719 for Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2.
Update for Windows 8.1 or Windows Server 2012 R2
The following update rollup is available.
For Windows 8.1 or Windows Server 2012 R2
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.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.