Error 0x801F0002

Value: -2145452030 | 0x801F0002 | 2149515266

What does it mean ?

ERROR_FLT_CONTEXT_ALREADY_DEFINED  
A context is already defined for this object.
Value: 2 | 0x0002 | 0b0000000000000010

Where does it come from ?

FACILITY_USERMODE_FILTER_MANAGER  
User Mode Filter Manager
Value: 31 | 0x01F | 0b00011111

Other Errors for FACILITY_USERMODE_FILTER_MANAGER