I faced a serious problem during deploying one of my CodeIgniter application to a windows server running on IIS. After installing CodeIgniter the index.php page was not visible at all. I tried many ways to configure it but it does not show anything. A problem with SEF (search engine friendly) URL CodeIgniter follows. I searched the internet but couldn’t find a suitable solution or answer to the problem. After two day I found a very good and step by step solution for this problem. You can have a look at it in the following URL.