Error 0x801F0020

Value: -2145452000 | 0x801F0020 | 2149515296

What does it mean ?

ERROR_FLT_NO_WAITER_FOR_REPLY  
No waiter is present for the filter's reply to this message.
Value: 32 | 0x0020 | 0b0000000000100000

Where does it come from ?

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

Other Errors for FACILITY_USERMODE_FILTER_MANAGER