description for event id from source cannot be found

Question

When I write a log into windows event log, I get the event below, what's the root cause of this message, and how can I fix it? Many Thanks

The description for Event ID 51001 from source RRWS cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

test log messge

the message resource is present but the message is not found in the string/message table

Answer 1

This is usually caused by a program that writes into the event log and is then uninstalled or moved.

Answer 2

You need to create an event source and a message file for it. Code looks something like this:

var data = new EventSourceCreationData("yourApp", "Application");
data.MessageResourceFile = pathToYourMessageFile;
EventLog.CreateEventSource(data);

Then you will need to create a message file. There is also this article that explains things (I did not read it all but it seems fairly complete).