Error 0xC00CEF0C

Value: -1072894196 | 0xC00CEF0C | 3222073100

What does it mean ?

WR_E_INVALIDSURROGATEPAIR  
XmlLite: writer: input contains invalid or incomplete surrogate pair
Value: 61196 | 0xEF0C | 0b1110111100001100

Where does it come from ?

FACILITY_INTERNET  
Wininet related (Internet APIs)
Value: 12 | 0x00C | 0b00001100

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