Error 0xC00D125C

Value: -1072885156 | 0xC00D125C | 3222082140

What does it mean ?

NS_E_WMP_HWND_NOTFOUND  
The Windows Media Player download manager cannot function properly because the Player main window cannot be found. Try restarting the Player.
Value: 4700 | 0x125C | 0b0001001001011100

Where does it come from ?

FACILITY_MEDIASERVER  
Windows Media Server
Value: 13 | 0x00D | 0b00001101

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