Error 0x00000001

Value: 1 | 0x00000001 | 1

What does it mean ?

S_FALSE  
Success. Condition was FALSE.
Value: 1 | 0x0001 | 0b0000000000000001

Where does it come from ?

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

StackOverflow

Other Errors for FACILITY_NULL