My OPC DA Client is installed in same Machine. When i Completed OPC DA Configuration in Ignition, the status of that server showing faulted. It was Showing this error “COM object method returns error code: 0x800401F3; CO_E_CLASSSTRING (Invalid class string)”. i already installed OPC COM Core Components dll . Is there any method that we have to follow while creating progid for OPC DA serve? Need assistance on above issue.