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Activate Server 2025 with 2022 retail key
I have a retail key for Windows Server 2022 standard edition. I'm rebuilding from scratch on new hardware and have installed Windows Server 2025 standard edition evaluation on the new hardware. If ...
You cannot activate Windows server 2025 with Windows server 2022 key.
Here is the compatibility matrix for your reference.
https://learn.microsoft.com/en-us/windows-server/get-started/kms-activation-planning?tabs=server22#activation-versions