removing index.php IIS 7.5 webconfig

Question

I would like to remove index.php from my permalink. I am using Codeigniter website. I have passed the requirements to use pretty permalink:
-PHP Version 5.4.27 Codeigniter
-IIS 7.5
-URL Rewrite 2.0
-Server API: FAST CGI

Before, I have removed index.php from codeigniter. I wonder if wordpress webconfig file has conflicted with codeigniter. Some help on determining the right webconfig would be greatly appreciated!

website.com/en/user => codeigniter with the controller User
website.com/blog

/apps
/system
/blog

web config to remove CI index.php

 <?xml version="1.0" encoding="UTF-8"?>
<configuration>
   <system.webServer>   
   <rewrite>
    <rules>
        <rule name="RuleRemoveIndex" stopProcessing="true">
            <match url="^(.*)$" ignoreCase="false" />
            <conditions>
                <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
                <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
            </conditions>
            <action type="Rewrite" url="index.php/{R:1}" appendQueryString="true"/>
        </rule>

    </rules>
    </rewrite>

    </system.webServer>
 </configuration>

/blog => WP app

web.config on WP dir

 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
  <system.webServer>
<rewrite>
  <rules>
        <rule name="wordpress" patternSyntax="Wildcard">
            <match url="*"/>
                <conditions>
                    <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
                    <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
                </conditions>
            <action type="Rewrite" url="index.php"/>
        </rule></rules>
    </rewrite>
  </system.webServer>
</configuration>

The same question on stackoverflow:

https://stackoverflow.com/questions/29074588/wordpress-pretty-permalink-404-error-installed-on-iis-7-5

Answer 1

After struggling for a while in the web.config structure. I found out we need to clear the rule before to add another rule. Just add tag </clear>

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
  <rules>
      <clear/>
    <rule name="wordpress" patternSyntax="Wildcard">
            <match url="*"/>
                <conditions>
                    <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
                    <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
                </conditions>
            <action type="Rewrite" url="index.php"/>
        </rule>
</rules>
</rewrite>
</system.webServer>
</configuration>

Answer 2

Make web.config put in the root directory.

User code:

 <?xml version="1.0" encoding="UTF-8"?>
    <configuration>
     <system.webServer>

     <httpErrors errorMode="Detailed" />
      <asp scriptErrorSentToBrowser="true"/>

   <rewrite>
    <rules>
    <rule name="RuleRemoveIndex" stopProcessing="true">
        <match url="^(.*)$" ignoreCase="false" />
        <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
        </conditions>
        <action type="Rewrite" url="index.php/{R:1}" appendQueryString="true"/>
    </rule>
   </rules>
   </rewrite>

 </system.webServer>

  <system.web>
 <customErrors mode="Off"/>
 <compilation debug="true"/>
 </system.web>