I currently have a custom application that's attempting to pull OPC data from a Windows 2016 server. Prior to updating my server with the patch, the application was able to collect data from the OPC server on the 2016 server. However, after updating the Windows 2016 server with the KB5004238 patch, the application was unable to pull the OPC data anymore. If I remove the patch, then I'm able to pull data again. However, I know that it comes with many improvements to Windows security.
Does anyone know what DCOM settings were changed with the KB5004238 patch? That would make it easier for me to troubleshoot my code and make changes to either the server or code to allow the application to pull data with the patch.