Why Application_Start called two times from different threads?

Question

I can't understand why Application_Start event is called two or three times when my ASP.NET app start? Application_End is not called between Application_Start calls. Also I have only one IIS pool instance.

Answer 1

Check out: Multiple Application_Start events firing Does this apply to you?

Also ensure you aren't writing any log entries to the bin folder as that will cause it as well.