I'm looking for some guidance on licensing as I take over a client with a few servers. The client currently has two physical servers running Windows Server 2016 and 2019, with six VMs running on Windows Server 2012 R2. There's one active domain controller on the 2012 VM and they had another DC on a 2022 VM that was unlicensed. I need to upgrade their systems to Windows Server 2025 and I'm not sure if I need to purchase additional licenses aside from the server itself. I'm also aware I need to migrate their web server to an Azure VM, as it can't run on AWS due to vendor issues. My main confusion is around the User CAL licensing; will I need to get those with the upgrade? Any advice would be really appreciated!
5 Answers
Remember that the latest Windows Server licenses come in packs, usually covering 15 cores. If your server has more cores, you'll need to purchase more packs. For example, if you're running 18 cores, you'd need two packs. Just be mindful of how many VMs you're planning to run because a standard license usually allows for two VMs per host.
On top of that, each standard server license only allows for two VMs, so if you're hosting more, you’ll need extra licenses. Just calculate how many you actually need to avoid any surprises later on.
It’s important to note that CALs are required whether you're using on-premise servers or a public cloud. If your client already has M365 licenses, that might cover some of their CAL needs as well. Also, don't overlook keeping Software Assurance if you want hybrid use rights.
Lastly, just a quick heads up about Windows Server 2025 as a domain controller. There are still some issues with how it operates in mixed environments, especially around the deprecation of older protocols, so keep that in mind when planning your upgrade.
Yeah, I heard that too. Make sure to double-check the latest updates regarding those deprecation issues.
Yes, you'll definitely need User CALs for the upgrade. While the licensing system doesn't check for them, if you get audited and don't have them, it could be pretty costly. Just to be safe, make sure to get updated User CALs for the new version.
Good point! Missing CALs can lead to expensive penalties, so better safe than sorry.
Exactly! If you have multiple VMs, consider whether a Datacenter license makes more sense for your setup.