Hello.
Based on this error, your computer has not reached the KMS activation threshold, so the server cannot be activated.
KMS requires a minimum number of either physical or virtual computers in a network environment. These minimums, called activation thresholds, are set so that they are easily met by Enterprise customers.
- Activation Thresholds for Windows Your organization must have at least 5 computers to activate servers running Windows Server. Your organization must have at least 25 computers to activate client systems running Windows.
In this case, it is recommended that you contact your administrator and reach the activation threshold for the server before you can activate your computer.
More details you can refer to this link: https://learn.microsoft.com/en-us/licensing/products-keys-faq
Best Regards,
Hania Lian
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