Error 0x8000FFFF

Value: -2147418113 | 0x8000FFFF | 2147549183

What does it mean ?

E_UNEXPECTED  
Catastrophic failure
Value: 65535 | 0xFFFF | 0b1111111111111111

Where does it come from ?

FACILITY_NULL  
The default facility code
Value: 0 | 0x000 | 0b00000000

StackOverflow

Other Errors for FACILITY_NULL