ELMAH stand for Error Logging Modules and Handlers which is an application for wide error logging facility that is completely pluggable. ELMAH dynamically installed or added to a running ASP.NET web application and all ASP.NET web applications on a machine without need recompilation and development. Once ELMAH has been dropped into a running web application and configured appropriately then you can get many functionality without changes the single line of codes. ELMAH event handlers can include logging to various database back ends and logging. This Login is viewed from a web portal and the sending of notification emails, tweets and RSS articles to advise administrators of the problem.