Error 0x80040008

Value: -2147221496 | 0x80040008 | 2147745800

What does it mean ?

OLE_E_CLASSDIFF  
Linked object's source class has changed
Value: 8 | 0x0008 | 0b0000000000001000
TAPI_E_COMPLETIONOVERRUN  
Too many call completions outstanding.
Value: 8 | 0x0008 | 0b0000000000001000

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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