Hello not-able
What type of product key is? Retail, MAK or KMS?
To resolve this issue, I would recommend the following steps:
- Double-check that you are using the correct product key for Windows Server 2019. You can verify this by checking the product key on the installation media.
- Ensure that the installation media you are using is not corrupted or damaged. You can try downloading a fresh copy of the Windows Server 2019 ISO and using that instead.
3.Use the Windows Activation Troubleshooter: Go to 'Settings' > 'Update & Security' > 'Activation' and run the Activation Troubleshooter. This tool can help identify and fix common activation issues.
Best Regards