Error message 401.2.: Unauthorized: Logon failed due to server configuration. When application deployed

Question

I have an asp.net 4.0 application that works fine running under cassini but when i deploy to IIS i get the above error. It is running under the Default App pool which a numb

Answer 1

This might be a very late answer, but the problem in my case was a mis-configured Publish profile (Using Web Deploy). As soon as I deselected the Precompile during publishing option (below) and re-published, it came back to normal and I was able to access it.

I also tried activating/deactivating it a couple of time and that confirmed it was the sole reason. The problem appeared when I activated it again and disappeared when I unchecked it.

And to be honest, I still don't have an explanation about what impact does this option have exactly and why it is the cause of such problem. I found this question but I am still investigating.