Troubleshoot 503 Service Unavailable errors with start-up debugging
In a previous post titled Where did my IIS7 server go? Troubleshooting "service unavailable" errors, I covered the basic steps for dealing with 503 Service Unavailable errors on IIS7.
This post dives deeper into debugging the IIS worker process to get to the bottom of particularly difficult crashes occurring during IIS worker process initialization, where the process goes away before you can debug it with normal means.