DotNetNuke (dnn) login problems in IE7

Question

I justed moved out dnn website to a new webserver running Windows 2008 64-bit. After some tweaks I was able to get things running great. However there is one last quirk. When I try to login to the admin/host portion of the site, I receive an error. Specifically, I get

A critical error has occurred.- Object reference not set to an instance of an object

I only get this error when logging in with Internet Explorer 7, ironically. I can login successfully using FF3. Does anyone have any idea what would cause this? I'm at a total loss.

I'm running dnn 3.0.13 in IIS7 using Classic application pool.

There are no errors/exceptions reported in the Log in the dnn application or en the Event Viewer on the web server. Frustrating, I know.

Andrew

Answer 1

Can you look in the application event log of your server, and if you see the exception, edit your question and post it?

Answer 2

It turns out, there were more problems than just IE7 login issues. Whenever I tried to update content, I would receive errors (red triangle, but nothing in the logs). In the end, I realized that my very old DNN version was not capable of running in .NET 2.0. I'm running such an old version because it's a legacy application that I still need to support. Clearly, an upgrade path should be explored.

Anyways, my solution was to install .NET 1.1. I followed the instructions listed here. I didn't have this problem on my other web servers because they come with .NET 1.1 pre-installed. IIS7 doesn't come bundled with it.

This fixed all of my problems and it ran perfectly.

Answer 3

i have ddn 4.9 and if i try to login as host i get the same meassage any help ?