Error 0x80400001

Value: -2143289343 | 0x80400001 | 2151677953

What does it mean ?

INPUT_E_REENTRANCY  
Requested operation cannot be performed inside the callback or event handler.
Value: 1 | 0x0001 | 0b0000000000000001

Where does it come from ?

FACILITY_INPUT  
Input
Value: 64 | 0x040 | 0b01000000

StackOverflow

Other Errors for FACILITY_INPUT