Q: Which client and server OS are supported to join Windows domain?
A: Quoted from Microsoft article:
The following Windows client and Windows Server operating systems are supported for domain member computers with domain controllers that run Windows Server 2012 or later:
- Client operating systems: Windows 8.1, Windows 8, Windows 7, Windows Vista
- Computers that run Windows 8.1 or Windows 8 are also able to join domains that have domain controllers that run earlier version of Windows Server, including Windows Server 2003 or later. In this case however, some Windows 8 features may require additional configuration or may not be available. For more information about those features and other recommendations for managing Windows 8 clients in downlevel domains, see Running Windows 8 member computers in Windows Server 2003 domains.
- Server operating systems: Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003 R2, Windows Server 2003
