Error 0x8034001D

Value: -2144075747 | 0x8034001D | 2150891549

What does it mean ?

ERROR_NDIS_ALREADY_MAPPED  
An attempt was made to map a file that is alreay mapped.
Value: 29 | 0x001D | 0b0000000000011101

Where does it come from ?

FACILITY_NDIS  
Network Driver Interface
Value: 52 | 0x034 | 0b00110100

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