This session presents the most common causes for hangs, performance issues, crashes, and memory problems in ASP.NET applications. The problems and demos shown are a compilation of many years of experience in troubleshooting these types of issues for some of our largest customers all over the world. We will show you how to avoid these issues, and give you an insight into how to troubleshoot these issues with windbg (from the debugging tools for windows) and SOS.dll.