Introduction

WebDAV Connector by default allows uploads of files only smaller than 4 Mega Bytes. If you use Tridion as a better replacement for a file system, this can be too much of a limitation. For example, inside of Tridion we use R5 to store all of our marketing materials, which can be pretty big. This article explains how WebDAV Connector can be configured to allow uploading larger files.

1. Locate the machine.config file

Size of uploads through WebDAV Connector is determined by settings of the .NET control HttpInputFile that is used by WebDAV Connector. The limit of 4 MB is a default set by MS to prevent DoS attacks, but for the use of WebDAV can easily be enlarged to, say 80 MB.
Search on the hard disk of your computer for the machine.config file. This file can be found in the .NET runtime directory. Open this file in a text editor such as Notepad.

2. Adjust file size

Locate the section <system.web> and look for the setting maxRequestLength.  The default value of this setting is 4096. Change this setting to a number you prefer, such as 24576. Save the file.
After this, you will be able to upload file up to the specified size. There is no need to reboot or restart any services.

Notes

For more information on this setting, consult http://support.microsoft.com/?id=295626.