Error 0x800401C1

Value: -2147221055 | 0x800401C1 | 2147746241

What does it mean ?

CONVERT10_E_OLESTREAM_PUT  
OLESTREAM Put method failed
Value: 449 | 0x01C1 | 0b0000000111000001

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

StackOverflow

Other Errors for FACILITY_ITF