When users need to be able to upload files that are more than 500 MB. This is part of a plan to use SharePoint to replace redirected folders.
The problem is that Webdav has an inbuilt size limit of 50 MB. This limit is on the client side and nothing to do with SharePoint configuration.
The limit can be changed by editing the registry key:
Change the DWORD Decimal Value to file size specified in bytes, e.g. 2000000000 for 2GB.
*Note: There is a file size limit on a 32-Bit DWORD.