Error 0xC0262400

Value: -1071242240 | 0xC0262400 | 3223725056

What does it mean ?

ERROR_GRAPHICS_SPECIFIED_CHILD_ALREADY_CONNECTED  
Specified display adapter child device already has an external device connected to it.
Value: 9216 | 0x2400 | 0b0010010000000000

Where does it come from ?

FACILITY_GRAPHICS  
Graphics drivers
Value: 38 | 0x026 | 0b00100110

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