Consider the following scenario:

You have a computer that is running Windows 8.
You install the update in the following Microsoft Knowledge Base article:
2756872 Windows 8 Client and Windows Server 2012 General Availability Cumulative Update
You try to play videos that have protected content in certain applications.

In this scenario, the video does not play. You may receive error codes that vary, depending the video player that you used.

To resolve this problem, install this update on the computer that is running Windows 8.