A worker process requested a recycle.
Sample Event:
An ISAPI reported an unhealthy condition to its worker process. Therefore, the worker process with process id of ''%1'' serving application pool ''%2'' has requested a recycle.
An ISAPI extension reported itself as unhealthy in that worker process.
Check the Application Event Log for details on which ISAPI reported itself as unhealthy. NOTE that ASP and ASP.net both have functionality to report themselves as unhealthy to prevent deadlocks.