Find the main reason for eliminating the first accident

Question

I am running an MVC application on the embedded VS web server. However, every time I look at the page, the output tab in Visual Studio shows a lot of exceptions.

A first chance exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll An exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll but was not handled in user code A first chance exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll An exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll but was not handled in user code A first chance exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll An exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll but was not handled in user code 

I tried to check the throw / usercode checkboxes on the VS Exception tab in the Debug menu. It was not an option, I didn’t catch anything.

How to find the root cause of this? I would like to see stacktrace to check if my managed code called it.