Error 0x80240041

Value: -2145124287 | 0x80240041 | 2149843009

What does it mean ?

WU_E_SYSPREP_IN_PROGRESS  
Service is not available when sysprep is running.
Value: 65 | 0x0041 | 0b0000000001000001

Where does it come from ?

FACILITY_WINDOWSUPDATE  
Windows update
Value: 36 | 0x024 | 0b00100100

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