Error 0x80004017

Value: -2147467241 | 0x80004017 | 2147500055

What does it mean ?

CO_E_RUNAS_SYNTAX  
A RunAs specification must be \ or simply
Value: 16407 | 0x4017 | 0b0100000000010111

Where does it come from ?

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

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Other Errors for FACILITY_NULL