If you installed the from the Microsoft Evaluation Center, standard activation will often fail until you convert the edition using DISM . Open Command Prompt (Admin) .
Activating Windows Server 2022 is a critical step to ensure your server remains functional and secure. Without activation, you will face limited functionality and frequent expiration notifications. Depending on your environment—whether it's a single server or a large-scale virtualization setup—Microsoft offers several activation methods. 1. Activating via the Settings App (GUI) how to activate windows server 2022
For "Core" installations or for more control, use the Software Licensing Management Tool (SLMGR) via an elevated Command Prompt: How to activate my Windows Server 2022 - Microsoft Q&A If you installed the from the Microsoft Evaluation
On the KMS host (Windows Server 2022/2019/2016), install the Volume Activation role: install the Volume Activation role: