I have a asp.net application that will appear hung at ramdom times. I determined yesterday when the application hangs, the application pool it runs in has the following item(s) listed under requests for the worker process.
Url: /Webresource.axd with an additional query string
Verb: Get
State:AuthenticateRequest
Module Name: WindowsAuthentication
This will start as one row, and then as more users try and access the
application the number of occurrences of this increases. It appears as
if the process is getting stuck/hung.
The application is a public one that requires no authentication and I have checked within the application and we are doing no formal authentication. We are connecting to a SQL Server backend but are using SQL authentication and not Windows. It is an Windows 2008 server with IIS 7. One other item to point out is we are using a version from the December time frame of URL Rewriting. The application was running in the Integrated Managed Pipeline Mode and I have since switched it to Classic. I have also tried running DebugDiag among other tools but haven't gotten anywhere with them. Any insight would be appreciated as I am not sure what to do next.
John