I am running SharePoint Foundation 2010. I have 1 APP and 2 WFE server. I did setup (in IIS) bindings to a subdomain and IP. I have setup my application and it was working fine. I ran the SharePoint Search Server installation on all 3 servers and configured it. Now for some reason I am getting a 500 - internal server error and I can't find out why it is happening.
I have restarted IIS on all servers, checked log files, rebooted servers, made sure all services, app pools, and applications were running.