Error 0xC00D1584

Value: -1072884348 | 0xC00D1584 | 3222082948

What does it mean ?

NS_E_WIZARD_RUNNING  
Another wizard is currently running. Please close the other wizard or wait until it finishes before attempting to run this wizard again.
Value: 5508 | 0x1584 | 0b0001010110000100

Where does it come from ?

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

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