Symfony 3 web.config

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <defaultDocument>
            <files>
                <add value="app_dev.php" />
            </files>
        </defaultDocument>
        <rewrite>
          <rules>
                <clear />
                <rule name="StaticFiles" stopProcessing="true">
                    <match url="^(.*)$" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="false">
                        <add input="{REQUEST_FILENAME}" matchType="IsFile"/>
                    </conditions>
                    <action type="Rewrite" url="{R:0}" logRewrittenUrl="true" />
                </rule>
                <rule name="Symfony 3" enabled="true" stopProcessing="true">
                    <match url=".?" ignoreCase="false" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
                    <action type="Rewrite" url="./app_dev.php" />
                </rule>
          </rules>
        </rewrite>
    </system.webServer>
</configuration>