Error 0x801F0006

Value: -2145452026 | 0x801F0006 | 2149515270

What does it mean ?

ERROR_FLT_NOT_SAFE_TO_POST_OPERATION  
Posting this operation to a worker thread for further processing is not safe at this time because it could lead to a system deadlock.
Value: 6 | 0x0006 | 0b0000000000000110

Where does it come from ?

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

StackOverflow

Other Errors for FACILITY_USERMODE_FILTER_MANAGER