PUT and DELETE method not supported on IIS server

[Forgerbours]

I am running a simple website on a hostforlife windows server, I suppose it is IIS server. The backend of the website is REST api implemented in PHP. However, when I send requests with PUT and DELETE as method, it just return 405 method unsupported. My web.config is like this:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
              <remove name="Main Rule"/>
                <rule name="Sub Rule" stopProcessing="true">
                    <match url=".*" />
                    <conditions logicalGrouping="MatchAll">
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />

                    </conditions>
                    <action type="Rewrite" url="index.php" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>

Please help. Thanks!

[requinix]

Does the error page mention WebDAV anywhere?