One of the important steps of any website is setting it up to fail Nicely. Sitecore has done a lot of this for us with their error pages, but that may not be the look you want your visitors to see! And what if Sitecore isn’t able to help at all? Not so pretty with ASP.NET error pages… But do not fear! With the configuration files Sitecore makes available, this is a snap to set up and fix.*** ***You Will need to change the web.config file, so please back it up before making any changes suggested here! The first and hardest step – make your error/not found pages that you want your visitors to see – these can be html pages, aspx pages, or even an existing page within Sitecore. Quick Edit!-- As a commenter pointed out: using Sitecore pages for your 404/page not found type errors can allow you to make use of the Sitecore features for multilingual sites as well as analytics. Not to mention, it makes it very easy for business users to make the changes. Usually Sitecore will handle you