The OrphanActionExe property specifies an executable to run when the World Wide Web Publishing Service (WWW service) orphans a worker process. You can use the OrphanActionParams property to send parameters to the executable.
In the command line string, the following characters have special meaning.
The process ID (PID) of the worker process which is about to be orphananed, causing OrphanActionExe to be invoked.
The failure reason.
The application pool ID of the worker process.