Error 0x80004019

Value: -2147467239 | 0x80004019 | 2147500057

What does it mean ?

CO_E_RUNAS_CREATEPROCESS_FAILURE  
The server process could not be started as the configured identity. The pathname may be incorrect or unavailable.
Value: 16409 | 0x4019 | 0b0100000000011001

Where does it come from ?

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

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Other Errors for FACILITY_NULL