Error 0x000D2AF9

Value: 862969 | 0x000D2AF9 | 862969

What does it mean ?

NS_S_REBOOT_REQUIRED  
Installation was successful; however, some file cleanup is not complete. To continue, you must restart your computer.
Value: 11001 | 0x2AF9 | 0b0010101011111001

Where does it come from ?

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

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