IIS 7 ignores MapPageRoute without file extensions

I have a Project, where I want to use the asp.net Routing function. Therefore I added some routes in my global.asax Application_start.

This works fine on my Windows 7 SP1, but when I deploy the Application to my W2K8 R2 Live Server I only get 404's when using开发者_StackOverflow the URLs. If I add a /default.aspx at the end of the URLs the pages get displayt correctly.

The IIS seems to ignore the URLs without a file extension.

Working on Local Server but 404 on Live server:

http://website/list/123/Test  

Working on both Servers:

http://website/list/123/Test/index.aspx

How can I get the Live server to use the extension less urls?

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Don't forget to add the following in your web.config file

<system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>