Why do I get a 405 Error in ASP.NET when posting back to "/"?

Question

Whenever I do a postback to "/", I get a 405 error. However, when I post back to "Default.aspx", things work fine.

As I am somewhat new to web devleopment, I haven't the foggiest idea on how to debug this. The issue driving me particularly nuts because I'm testing submitting a form on the front page of the site I'm working on.

Some environmental info: - IIS 5.1 on Windows XP - We use ISAPI Rewrite to route our URLs.

Any suggestions would be helpful.

Answer 1

IIS 5.1 only allows HTTP requests of type to GET to unmapped files. HTTP requests of type POST, HEAD, and all others are responded to with a 405 resource not allowed error.

More information:

http://www.somacon.com/p126.php

Answer 2

Suggest a read of this blog post "Url Rewriting with ASP.NET" from Scott Guthrie.

The bit near the bottom entitled "Handling ASP.NET PostBacks with URL Rewriting" is particularly helpful - the ASP.NET 2.0 Control Adapter was the key for us.