I'm running Windows Server on a KVM Red Hat setup (virtualized environment) but mistakenly bought keys for the Standard Edition instead of the Data Center edition I actually need. I want to convert my existing Data Center evaluation version to Standard, but I can't afford to reinstall since I have numerous applications that can't be migrated. I'm not very skilled with Linux, so I'm hoping there's a straightforward solution.
4 Answers
Honestly, you might want to consider just contacting the store where you bought the keys and see if you can get a refund. Then, you can purchase the correct Data Center keys directly. It could save you a lot of headaches later on.
You should check out the Microsoft documentation about upgrade and conversion options here: https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-conversion-options. It might give you some guidance on moving forward. Just make sure to have all your keys and details on hand when you check it out!
If you're considering doing this yourself, just a heads up: using the DISM tool to set the edition might work in theory, but you’ll need a valid key for the target edition. Keep in mind this process can be risky; it could cause reboots and relies on how your features are set up. I'd recommend setting up a small test VM first to try it out without messing with your main setup.
Some are suggesting more drastic measures like rebuilding. That seems a bit extreme if you don't have to. Just be cautious and try to find a proper fix before you start over!

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