I know this is lacking in detail but I'm not even sure what questions I should be asking -- server is Windows Server 2012. I have one web application hosted on this server. The application is for internal use only at my company. My issue is that the IIS service stops and restarts without any user interaction several times a day. When this happens, we lose connectivity to the application for a few seconds until the service restarts. How do I even begin to try to figure out what's causing it? There's nothing in the Windows Event logs. The web application uses SiteMinder authentication, and there are entries in the Netegrity logs, but they only indicate that the IIS service stopped and restarted; nothing indicating why.
I appreciate even further questions so I know what other information you might need to try to figure this out.