Error 0x80030100

Value: -2147286784 | 0x80030100 | 2147680512

What does it mean ?

STG_E_INUSE  
Attempted to use an object that is busy.
Value: 256 | 0x0100 | 0b0000000100000000

Where does it come from ?

FACILITY_STORAGE  
OLE Storage. For status codes returned from IStorage or IStream method calls relating to structured storage. Status codes with code (lower 16 bits) values in the range of Windows error codes (that is, less than 256) have the same meaning as the corresponding Windows errors
Value: 3 | 0x003 | 0b00000011

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