Server Application Unavailable

I'm having a tough time with an asp.net application.

I'm running Win 2003 Server with IIS 6.0 and .Net 1.1 Framework.

Each time I try to access the app from a browser i get the following error.

----------------------------
Server Application Unavailable
The web application you are attempting to access on this web server is currently unavailable. Please hit the "Refresh" button in your web browser to retry your request.

Administrator Note: An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur.
----------------------------
Here's a entry from this mornings log file. It refers to the page I'm trying to access.
----------------------------
2004-08-18 10:02:14 10.1.5.242 GET /ConcoWebAppX/SiteContacts.aspx SiteID=1268 80 - 10.1.5.242 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+.NET+CLR+1.1.4322) 500 0 0
----------------------------
I have security set to the local IUSR_MACHINENAME account from the root down, the Authenticated Access has been tried with both Integrated Windows Authentication and nothing checked.

The Execute Permissions under the Home Directory is set to scripts only.

I'm really at a loss.

Can anyone steer me in the right direction for an answer as well as a best practice?

Thanks.

Doug DexterDid you try removing all code from the page and re-running it to ensure that it is not a coding error (for example a never ending loop)?
The code runs in development, and has even run on this 2003 server and there are several .Net pages affected by this, not just the example I've shown.

So I'm certain it's a permission issue.

Thanks.
does it involve database ?
Yes.
This thing is driving me CRAZY...

It works on XP PRO...

But it REFUSES to run on Server 2003...

Hasn't SOMEONE had this problem?
FIXED.

In the web.config file set the following:

<authorization>
 <allow users="*" /> <!-- Allow all users --
 <!-- <allow users="[comma separated list of users]"
 roles="[comma separated list of roles]"/>
 <deny users="[comma separated list of users]"
 roles="[comma separated list of roles]"/>
 -->
 </authorization>

John 3:16

dd