Error 0x80072176

Value: -2147016330 | 0x80072176 | 2147950966

What does it mean ?

ERROR_DS_DOMAIN_VERSION_TOO_LOW  
The version of the operating system installed on this server no longer supports the current domain functional level. You must raise the domain functional level before this server can become a domain controller in this domain.
Value: 8566 | 0x2176 | 0b0010000101110110

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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