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Hello Puryanto,
Yes, your proposed configuration is fully permissible under Microsoft’s licensing terms. Running Windows Server 2025 Datacenter Edition as the Hyper‑V host allows you to install and operate virtual machines with Windows Server 2025 Standard Edition inside that environment. The licensing model does not restrict guest operating systems to match the host edition. What matters is that the Datacenter license grants unlimited virtualization rights for Windows Server instances, regardless of whether those instances are Datacenter or Standard edition.
To be precise, Windows Server Datacenter 2025 includes unlimited virtualization rights for Windows Server guest VMs on the licensed host. This means you can deploy any number of Windows Server VMs, and those VMs can be either Datacenter or Standard edition. The Standard edition guest OS will function normally, but from a licensing perspective, you are covered by the Datacenter license assigned to the physical host. You do not need to purchase additional Standard edition licenses for those guest VMs, provided they are running on the Datacenter‑licensed host.
The only caveat is if you intend to run those Standard edition VMs on a different host that is not licensed with Datacenter. In that case, you would need to license them separately with Standard edition licenses. But as long as they remain on the Datacenter‑licensed Hyper‑V host, you are compliant and supported.
I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!
HP.