Consider the following scenario:

• On a computer that is running Windows Vista, you try to play audio or video content in Windows Media Player 11 from an .asx playlist.
• The DURATION and STARTTIME elements that are in the .asx playlist are used to control the playback time of the content. The sum of the value of these elements exceeds 429.497 seconds.

In this scenario, Windows Media Player 11 cannot play the media that is in the playlist.

Note: This problem does not occur on computers that are running Windows XP or Windows 7.

You have a multiple bit rate (MBR) file or a live stream that contains more than 32 media streams. You try to play the MBR file or the live stream in Windows Media Player on a computer that is running Windows Vista. However, Windows Media Player cannot play the MBR file or the live stream. Additionally, you receive error code C00D11B1.

Note: This problem also occurs when you use Windows Media Player on a computer that is running Windows XP.

Consider the following scenario:

• On a computer that is running Windows Vista, you disable Internet Explorer in the Set Program Access and Computer Defaults settings.
• You select the Express configuration when you run Windows Media Player for the first time.

However, “Internet Explorer” is still mentioned in several user interface (UI) phrases in Windows Media Player even though Internet Explorer is disabled.

For example, “Internet Explorer” is mentioned in the following UI phrases:

UI location: Tools – Options – Security – Security Zone
UI phrase: “The Player uses Internet Explorer Security zone settings to display Web content, such as that provided in the Guide and online stores.”

UI location: Tools – Options – Privacy – Cookies
UI phrase: “The Player uses Internet Explorer to communicate connection and logging information to servers when streaming content and is used by content providers to provide services. Modifying your cookie settings will affect the content you can access.”

You remove access to Windows Media Player by clicking Set program access and computer defaults. In this case, the Windows Media Player icon is removed from the All Programs list. However, when you manually start and configure Windows Media Player, the Windows Media Player icon is added to the “All Programs” list by itself.

Note You can manually start Windows Media Player by double-clicking the Wmplayer.exe application, or by clicking on a file for which Windows Media Player is the only registered application, such as a .wma file.

On a computer that is running Microsoft Windows Media Player 11, consider the following scenario:

• You play a media file that is encoded with GSM codec in Windows Media Player 11.
• You click the Play button on the Windows Media Player control panel.
• The media file starts playing and the seek slider in the seek-bar starts moving.

In this scenario, after the seek slider starts moving, the seek slider jumps to the beginning of the seek-bar and sticks.

For example, a voice message is attached to an e-mail. You open the e-mail, and then click the Play button on the Windows Media Player control panel. The seek slider sticks at the beginning of the seek-bar on the Windows Media Player control panel.

Unexpected behavior occurs after monitor cable disconnected during DVD playback in Windows Media Player.

When you disconnect the monitor cable during DVD playback in Windows Media Player, you may experience any of the following symptoms:

• Windows Media Player may terminate abnormally.
• Windows Media Player may stop responding.
• The video may be scrambled during playback.

Symptom 1

You have a Media Transfer Protocol (MTP) device or a Windows Media Device Manager (WMDM) device. The device contains multiple storage media. When you connect this device to a computer, each storage medium appears in the navigation pane of Windows Media Player 11. When you unplug the device, one storage medium is still shown in the navigation pane of Windows Media Player 11. However, you expect that all the storage media should be removed from the navigation pane.

Note: The device and storage media are removed from the operating system and Windows Explorer as expected.

Symptom 2

You disconnect an external storage medium from a computer and then re-connect the external storage medium. However, Windows Media Player 11 cannot read the contents of the external storage medium. Additionally, after you reconnect the external storage medium, Windows Media Player cannot sync any content to the external storage medium.

Note: This problem does not occur on an internal storage medium.

Microsoft has released an update for the Windows Media Center TV Pack for Windows Vista. This update is intended for computers that are running the Media Center TV Pack in Windows Vista Home Premium or Windows Vista Ultimate.

The update for Media Center TV Pack for Windows Vista resolves the following issues:

• When the .wtv files are synched by using the standard Windows Media Player process for third-party formats, the .wtv files are put under the Video library instead of under the Recorded TV library.
• Windows Media Player does not display the progress bar during media playback.

On a Windows Vista computer, you click a hyperlink to a .wpl file. If the HTTP header returned from the server contains content-disposition with a file name that includes encoded characters (for example, testwpl_02%2B02%2B2009.wpl), then Windows Media Player may report the following error:

“Windows Media Player cannot find the file. If you are trying to play, burn, or sync an item that is in your library, the item might point to a file that has been moved, renamed, or deleted.”

When you use Windows Media Player to play MPEG-2 video content that is standard definition (SD) video-compliant, you encounter a display issue on a Windows Vista-based computer. Specifically, the content’s 16:9 aspect ratio is unexpectedly displayed at a 4:3 aspect ratio.