Missing Playlists in Windows Media Player 12 for Windows 7

Hi,

You may follow these steps and check if the issue is resolved:

Windows Media Player library database may have become corrupted.

Step 1: Clear the Windows Media Player database. To do this, follow these steps:

a. Exit Windows Media Player.
b. Click Start, click Run, type %LOCALAPPDATA%\Microsoft\Media Player, and then click OK.
c. Select all the files in the folder, and then click Delete on the File menu.
Note: You do not have to delete the folders that are in this folder.
d. Restart Windows Media Player.
Note: Windows Media Player automatically rebuilds the database.

If this does not resolve the problem, clear the Windows Media Player database cache files.

Step 2:
a. Exit Windows Media Player.
b. Click Start, click Run, type %LOCALAPPDATA%\Microsoft, and then click OK.
c. Select the Media Player folder, and then click Delete on the File menu.
d. Restart Windows Media Player.

Step 3: Disable and re-enable Windows Media Player.

Disable media player by following these steps:

a. Go to Start and in the search type "Turn Windows features On or Off".
b. Click on "Turn Windows features On or Off".
c. Browse to the Media Features and uncheck the mark in front of Windows Media Player.
d. Restart the computer

Steps to re-enable Windows Media Player:

a. Go to Start and in the search type "Turn Windows features on or off".
b. Click on "Turn Windows features on or Off".
c. Browse to the Media Features and place a check mark in front of Windows Media Player.
d. Restart the Computer.

For more information refer to the article below:
http://windows.microsoft.com/en-US/windows7/Turn-Windows-features-on-or-off

Regards,
Afzal Taher-Microsoft Support.
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