For businesses that have purchased Windows Server 2016 through Volume Licensing (Open, Select, Enterprise Agreement), the VLSC portal contains the official ISO images with VL keys.
Pre-Installation [Cisco Unified Customer Voice Portal 12.5(1)] microsoft windows server 2016 iso
Some older enterprise software is specifically validated only for the 2016 kernel. For businesses that have purchased Windows Server 2016
Provides a full Windows-style GUI (similar to Windows 10) for users who prefer a visual interface for local management. Hardware & System Requirements microsoft windows server 2016 iso