How to get rid of Event Viewer errors?

Error:
The description for Event ID ( 0 ) in Source ( Learning Management System ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event:

In registry:
1. Open regedit and go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Eventlog\Application\Learning Management System.
2. If ‘EventMessageFile’ is missing then the error above show is the event log. See the image below.

RegistryKey

Code and solution :
The code below has ‘EventLog.CreateEventSource’ which creates ‘Learning Management System’ key under ‘HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Eventlog\Application’ in registy and also create ‘EventMessageFile’ expandable string value with details below:
Value name:EventMessageFile
Value data: C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\EventLogMessages.dll

If the ‘EventMessageFile’ string is missing it show the error message above. On my xp machine I do not see the above message because when I run the code it creates the ‘Learning Management System’ and EventMessageFile string. If you have manually created the key in the registry on the Windows 2003 server because you are getting security exception while the application trying to create the key, then you have to mannually create the EventMessageFile string with the above mention details.

//Check if the ATLAS web services working
 if (reqHTTPGetADFWebServices.StatusCode == 0)
 {
    //Check if the event log application exist
    if (System.Diagnostics.EventLog.Exists("Application"))
    {
       //Check if the event log source exist
       if (!System.Diagnostics.EventLog.SourceExists("Learning Management System"))
       {
          //Register the source                            
          EventLog.CreateEventSource("Learning Management System", "Application");
          // The source is created.  Exit the application to allow it to be registered.                          
       }
 
   // Write an source, message and type entry to the event log.  
   System.Diagnostics.EventLog.WriteEntry("Learning Management System", "FAILED:
 ADF web services are not available.", EventLogEntryType.Error);                      
}

Resources:
Error Message When ASP.NET Application Tries to Write New EventSource in the EventLog

About Diganta Kumar

Diganta Kumar is an experienced Technical Program Manager with a passion for technology. He has architected and developed software for over a decade for a broad range of industries. Diganta is a founder of two online IT businesses. He likes to help, mentor, and manage software development teams to improve and produce great software. He currently works as a Principal Program Manager for Microsoft. Before joining Microsoft, he was with AWS for five years, where he managed large cross-functional programs on a global scale.