Error 0x80242015

Value: -2145116139 | 0x80242015 | 2149851157

What does it mean ?

WU_E_UH_POSTREBOOTRESULTUNKNOWN  
The result of the post-reboot operation for the update could not be determined.
Value: 8213 | 0x2015 | 0b0010000000010101

Where does it come from ?

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

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