If your KMS server is not functioning correctly, there are several troubleshooting steps you can take. First, verify that the KMS server is properly installed and configured according to Microsoft’s guidelines. Ensure that network connectivity between the KMS server and client machines is not interrupted. Check the server logs for any error messages that might indicate what the issue is. If necessary, restart the KMS service and verify that the server’s activation key is correct and has not expired. For persistent issues, consult Microsoft’s support documentation or contact their support team for further assistance.