How to activate Windows Server using a Windows Server license?
Get activation key as following:

To activate Windows Server using a product key, follow these steps:
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### Step-by-Step Activation Guide
1. Open Command Prompt as Administrator
Press `Win + X` and select Terminal (Admin) or Command Prompt (Admin).
2. Install the Product Key
Run the command:
slmgr /ipk <Your-25-digit-product-key>
Replace `<Your-25-digit-product-key>` with your valid license key.
3. Activate Online
Execute the activation command:
slmgr /ato
This connects to Microsoft’s activation servers to validate the key.
4. Verify Activation Status
Check successful activation with:
slmgr /xpr
or
slmgr /dlv
(Displays detailed license information.)
### Graphical Interface Method
- Go to Settings > System > Activation and enter the product key under Update product key.
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Common Questions:
My server has 32 cores, and I also purchased the additional core license WINSVR2022STD ADLIC(2 CORE) NOKEYAPOS. How can I acknowledge whether my additional core license has been activated? If it is not activated, will it affect my normal use?
Answer:
Windows Server 2022 Standard or later covers 16 physical cores per license. For a server with more than 16 cores, you need to purchase Additional Core License (ADLIC). But ADLIC is used for compliance configuration—it's essentially just a piece of paper with no activation key and requires no additional activation steps. One only need to activate the standard license when activating.