Connectivity to windows 2000 server as member domain is lost by name

Question

hello,

I have a windows 2000 server using SQL 2000 member of domain, I have an old system in it.

I have windows 2012 as domain controller, I have upgraded it to windows Windows 2019. after this happened the connectivity to the win 2000 is not working well, and the client cannot use the system running SQL.

I cannot access the server 2000 with address name, but I can access it with IP address. before the upgrade everything was working fine.

any suggestions that I can do to make things working again.

Thank you in advance.

Answer 1

Hi Nezar Gatata,

Thank you for posting in the Microsoft Community Forums.

There may be compatibility issues between Windows Server 2000 and newer versions of Windows, especially after upgrading to Windows Server 2019. Here are some suggestions for troubleshooting and possibly resolving connection issues:

It sounds like there might be compatibility issues between the Windows Server 2000 and the newer versions of Windows, particularly after the upgrade to Windows Server 2019. Here are a few suggestions to troubleshoot and potentially resolve the connectivity issues:

1. Check Network Configuration: Ensure that the network settings on both the Windows Server 2000 and the Windows Server 2019 are configured correctly. Verify IP addresses, subnet masks, default gateways, and DNS settings.
2. DNS Configuration: Since you mentioned that you can access the Windows Server 2000 by IP address but not by name, there may be DNS resolution issues. Make sure that the DNS settings on both servers are correctly configured and that the DNS records for the Windows Server 2000 are properly registered and resolving.
3. Firewall Settings: Check the firewall settings on both servers to ensure that they are not blocking the necessary traffic for SQL Server communication. You may need to configure firewall rules to allow traffic on the required ports for SQL Server (typically 1433 for default instances).
4. Compatibility Mode: Try running the SQL Server 2000 service in compatibility mode on the Windows Server 2000. Right-click on the SQL Server service executable, go to Properties, and under the Compatibility tab, select an appropriate compatibility mode for Windows Server 2019.
5. SQL Server Configuration: Check the SQL Server configuration to ensure that it is listening on the correct IP address and port. You can use SQL Server Configuration Manager to verify these settings.
6. Client Configuration: If the clients are unable to connect to the SQL Server, check their network configuration and ensure that they are using the correct server name or IP address in their connection strings.
7. Update Drivers and Software: Ensure that all network drivers and software on both servers are up to date. Outdated drivers or software can sometimes cause compatibility issues.
8. Compatibility Fixes: Windows Server 2019 includes compatibility features that can help with running older applications. You can try using Compatibility Administrator to create compatibility fixes for the SQL Server 2000 application.
9. Consider Upgrade Options: Given that Windows Server 2000 and SQL Server 2000 are extremely outdated and no longer supported, consider upgrading to newer versions of Windows Server and SQL Server that are fully supported and compatible with your environment.

Best regards

Neuvi Jiang