If you are using IIS 7 and you try to upload a file that is too big you will receive this error:
The request filtering module is configured to deny a request that exceeds the request content length.
In IIS 6 you could manipulate the request length by changing the maxRequestLength in the web.config.
1: <system.web>
2: <httpRuntime maxRequestLength="1000000"/>
3: </system.web>
To get the request length raised in IIS7, you have to set the following value in the web.config:
1: <system.webServer>
2: <security>
3: <requestFiltering>
4: <requestLimits maxAllowedContentLength="1000000000">
5: </requestLimits>
6: </requestFiltering>
7: </security>
8: </system.webServer>