web.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.webServer>
        <staticContent>
            <remove fileExtension=".mem" />
            <mimeMap fileExtension=".mem" mimeType="application/octet-stream" />
            <remove fileExtension=".data" />
            <mimeMap fileExtension=".data" mimeType="application/octet-stream" />        
        </staticContent>
    </system.webServer>
</configuration>