Windows Server 2025 Build 26100 Product Key. Today microsoft released a new insider preview build of windows server 2025 (vnext) and the build number is 26311. That is the public client kms key for a 2025 server (usually the default key on a 2025 server install).
Im testing and if i install windows 11 and inside him mount the server 2025 iso and run the setup, server 2025 installs and work. Review windows server 2025 release notes and system requirements.