Error 0x800720FF

Value: -2147016449 | 0x800720FF | 2147950847

What does it mean ?

The replication operation encountered an error with the mail system.
Value: 8447 | 0x20FF | 0b0010000011111111

Where does it come from ?

Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

Other Errors for FACILITY_WIN32