.NET Security

I have installed my ASP.NET 2.0 web app. on a new server and when I attempt to access the home page I get: Failed to access IIS metabase. Description: An unhandled exception occurred during the execution of the ...

After my system boots up and is ready I will get an error message stating my system is not secure and I need to turn on my firewall...well according to the settings it is on and has not been changed. I have turned it off, then ...