Error 0x80244021

Value: -2145107935 | 0x80244021 | 2149859361

What does it mean ?

WU_E_PT_HTTP_STATUS_BAD_GATEWAY  
HTTP 502 - the server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed when attempting to fulfill the request.
Value: 16417 | 0x4021 | 0b0100000000100001

Where does it come from ?

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

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