IIS Returning Old User Names to my application

Question

Here\'s my scenario. I created an application which uses Integrated Windows Authentication in order to work. In Application_AuthenticateRequest(), I use

Answer 1

Just as an FYI we had the exact same issue. What appeared to work for us is to go into Active Directory and do a "Refresh". Immediately after this we had to recycle the application pool on the intranet sites that were having this issue.