We are in the process of upgrading some of our web application servers from 2003 to 2008 R2. I have just completed upgrading one of our web application servers but am having an issue I'm hoping someone might be able to shine some light on as I'm not much of a IIS guy.
We have an RSA app on our sites and when users go to this website they should get an RSA login screen. However, while testing, we get a HTTP 500 error. If I disable friendly errors in IE it says " Web server Security Configuration Error."
At first I was thinking some sort of permissions issue with the folders but that doesn't seem to be the case. There are sites on here that do work, it just seems that our ASP RSA app is not working.
Are there any tips or tricks to doing a 2003 to 2008R2 upgrade involving IIS that I missed perhaps?