HTTP 400 : detected invalid characters in the URL. IIS decoding URL too early? Whats going on here?

Question

So i have this URL: http://test.com/afolder/who-else-wants-to-make-horror-movies%3f/

which is URL encoded version of : http://test.com/afolder/who-else-wants-to-mak

Answer 1

Looks like there are some issues with IIS7 on x64....not sure if this is your issue or not:

http://blogs.iis.net/rakkimk/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