The option to select an alternative file source does not display when you use Internet Explorer 8 to view a PDF document that contains an embedded media

Consider the following scenario:

• You use Windows Internet Explorer 8 to browse a PDF document that contains an embedded media file.
• You enable protected mode in Internet Explorer 8.
• You try to select an alternative source to open the media file.

In this scenario, the Select Multimedia File dialog box does not open as expected.

Note Adobe PDF documents support embedded media and the ability to allow an alternative file source to open the media if the current path cannot be accessed.

Security update information

To resolve this problem, install the most recent cumulative security update for Windows Internet Explorer. To do this, visit the following Microsoft Web site: For more technical information about the most recent cumulative security update for Windows Internet Explorer, visit the following Microsoft Web site: Note This update was first included in security update 980182 (MS10-018). For more information, click the following article number to view the article in the Microsoft Knowledge Base: