Hello there,
If you're encountering activation errors when attempting to activate Windows 10 using a Key Management Service (KMS) server running Windows Server 2012 R2 Standard, you can follow these steps to troubleshoot the issue:
Verify KMS server connectivity:
Ensure that the Windows 10 client can communicate with the KMS server over the network.
Confirm that there are no firewall or network configuration issues blocking the connection between the client and the server.
Check DNS configuration:
Make sure that the DNS configuration of the Windows 10 client is correctly set to resolve the KMS server's Fully Qualified Domain Name (FQDN) or host name.
Ensure that the DNS server used by the client can resolve the KMS server's FQDN or host name to the correct IP address.
Check KMS host key:
Verify that the KMS host key installed on the Windows Server 2012 R2 Standard KMS server is appropriate for activating Windows 10 clients.
Windows 10 requires a specific KMS host key to activate successfully. Ensure that you are using the correct KMS host key for Windows 10 activation.
You can obtain the correct Windows 10 KMS host key from the Volume Licensing Service Center (VLSC) or your Volume Licensing agreement
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Hope this resolves your Query !!
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