We have a Windows Server 2003 R2 server running IIS.
Every couple of days now it seems that random sites will suddenly get
Server Application Unavailable. Note that these (so far) have not even been ASP.NET sites, but ones written in simple HTML pages, and even ones with NO pages (strictly directory browsing).
Simply recycling the application pools makes the error go away.
The message makes reference to looking in the event logs to see what caused the error. Doing so yields no relevant entries though in ANY of the various event logs on the machine, which leaves me with nothing to start with to try to figure this out.
Many sites on line say this is a .NET issue, but again, these aren't even .NET sites. (In fact, I don't recall it happening to ANY of our .NET sites yet.)
Any clues or ideas about where to start looking to figure this out?