This article provides a detailed overview of ASP.NET custom error pages and several different methods to implement them.  When an error will occur, end users should always have a view of meaningful and friendly error pages.  At the same time, it is also important that people on the other end (the administrator or developers) are alerted about problems.  Using the Custom Error Page we can also provide the page with the site’s look and feel.  Custom error page design becomes a normal part of site design.