Trying to access a url: server/Help/Upload/4 works fine, unfortunately we have to add a &iframe; on the end of this URL for it to be displayed in fancybox.
The URL with &iframe; on the end [server/Help/Upload/4/&iframe;] causes a IIS bad request.
I've googled for ages and can't seem to make any headway with this problem.. also tried the following:
http://extended64.com/blogs/news/archive/2008/10/10/asp-net-2-0-x64-you-may-get-http-400-bad-request-or-error-as-mentioned-in-kb-932552-or-826437.aspx
Best Answer
Solved using this: http://dirk.net/2008/06/09/ampersand-the-request-url-in-iis7/