I have been tasked with debugging an intermittent server issue. We are getting reports of some random error 500 messages. I've enabled Failed Request Tracing, and it has captured the information, but even knowing the reported error, I don't know what I should be looking at next.
Some relevant info:
The app crashing is an ASP.Net 4.0 application, running in it's own apppool, which is set to .Net 4.0 Classic Mode.
The warning produced is:
ModuleName="IsapiModule", Notification="EXECUTE_REQUEST_HANDLER", HttpStatus="500",
HttpReason="Internal Server Error", HttpSubStatus="0", ErrorCode="Incorrect function.
(0x80070001)", ConfigExceptionInfo=""
Given this error, what should I be looking at?