The worker process for ASP.NET was re-started.
There is a periodic ping sent to the worker process to verify that it is
still alive and responsive.
If the worker process fails to respond, it is terminated, and a new process
is started up.
The worker process may fail if there is some error in the app code. If for
example, you have an infinite loop in the app, then the worker process may
become non-responsive. Windows will recycle the process in this case.
