Error 0x80072175

Value: -2147016331 | 0x80072175 | 2147950965

What does it mean ?

ERROR_DS_FOREST_VERSION_TOO_LOW  
The version of the operating system installed on this server no longer supports the current AD DS Forest functional level or AD LDS Configuration Set functional level. You must raise the AD DS Forest functional level or AD LDS Configuration Set functional level before this server can become an AD DS Domain Controller or an AD LDS Instance in this Forest or Configuration Set.
Value: 8565 | 0x2175 | 0b0010000101110101

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

StackOverflow

Other Errors for FACILITY_WIN32