What causes an HTTP 405 “invalid method (HTTP verb)” error when POSTing a form to PHP on IIS?

Question

I have one form in a PHP (5.2.9-1) application that causes IIS (Microsoft-IIS/6.0) to throw the following error when POSTed:

The page you are looking

Answer 1

I had this issue with a facebook application that I was developing for a fan page tab. If anyone faces this issue with a facebook application then

1-goto https://developers.facebook.com

2-select the application that you are developing

3-make sure that all the link to your application has tailing slash /

my issue was in the https://developers.facebook.com->Apps->MYAPPNAME->settings->Page Tab->Secure Page Tab URL, Page Tab Edit URL, Page Tab URL hope this will help