Playback of protected video content can fail and cause an error message to be returned

This article helps you resolve the problem that occurs when you attempt to play a video containing DRM-protected content.

Applies to:   Silverlight
Original KB number:   2477822

Summary

In some cases, attempting to play a video containing DRM-protected content can occasionally fail and cause an error message to be returned.

Attempting to use Silverlight 4 or earlier to play a video that is DRM-protected can result in playback failing with an error. The failure is not machine configuration or locale dependent. Types of content that can result in playback failure is also unpredictable.

Cause

This is due to an issue affecting the Silverlight runtime caused by a failure during license acquisition.

Resolution

This issue has been corrected and the fix will be included in the next Silverlight 4 servicing release. Additionally, the error can be resolved by closing all open browser windows, then restarting the application and attempting to play the video again.