HTTP Error 404.13 - Not Found : The request filtering module is configured to deny a request that exceeds the request content length

Configuring via IISManager

Open the IIS Manager and select the site or application you need to configure in the left panel

Select "Features View" and double click on the "Request Filtering" icon.

 

Figure : Request Filtering

Note :

If you can't find the "Request Filtering"icon, you need to install the IIS Administration Pack from this link : http://www.iis.net/download/AdministrationPack. This is a lightweight installation which shouldn't take too much time on a decent internet speed.

Double clicking on the "Request Filtering"icon will bring up the Request filtering configuration window. Right click on the window and select the "Edit Feature Settings" option:

 

Figure : Edit Feature Settings option in IIS

Finally, specify the Maximum allowable content length (In Byte) in the following window and click "OK" to save:

 

Figure : Specifying Maximum allowable content length in Bytes

This worked perfect for me and I was able to upload the large file now without any problem. Hope, this will work for you too :)