Error 0x80070528

Value: -2147023576 | 0x80070528 | 2147943720

What does it mean ?

ERROR_MEMBER_IN_GROUP  
Either the specified user account is already a member of the specified group, or the specified group cannot be deleted because it contains a member.
Value: 1320 | 0x0528 | 0b0000010100101000

Where does it come from ?

FACILITY_WIN32  
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

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