I am running a .NET 2.0, 32-bit application in IIS. Recently the app pool keeps crashing as soon as I start it. It was fine for over a year. I keep getting a series of listener channel errors:
A listener channel for protocol 'http' in worker process '4732' serving application pool ... reported a listener channel failure. The data field contains the error number.
I get this error 5 times then the APP Pool crashes with a browser 503 error. Worker process numbers are always the same 5.
Worker process '1084', then '4732', '5644', '6064' and '3724' -- all listener channel errors and application pool crashing. I don't understand what changed. There were some updates on the server 2 weeks ago, but nothing else was modified. Can someone shed some light on this issue for me?