Error 0x80042104

Value: -2147213052 | 0x80042104 | 2147754244

What does it mean ?

MSS_E_CATALOGSTOPPING  
The content index cannot be deleted while the search service is stopped. Restart the search service and try again.
Value: 8452 | 0x2104 | 0b0010000100000100

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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