Uninstall Windows Media Player 11
During to its inefficiency and lack of flexibility of Windows Media Players 11, the version 10 remains preferred by its users.
Go to menu
Start > Control Panel > Add/Remove programs.
Scroll to Windows Media Player 11 and select
Remove.
Restart your Computer to save all settings.
Another option is to restore your computer a date before your update to recover the previous version but you may however lose new installed files.
