The default limit of a single upload file in SharePoint is 50MB. The size limit can be increased upto 2GB, from central admin. To increase the size limit and any issues faced during upload of large files, check the link below http://blogs.technet.com/b/sharepointcomic/archive/2010/02/14/uploading-large-files-to-sharepoint-on-windows-server-2008-and-iis7.aspx As given in the link, it is not recommended to upload large files of size greater than 500MB thru sharepoint. The reason's why large file uploads are not recommended via browser is listed Reliably transferring gigabyte or bigger files without breakages over a protocol like HTTP, which is better suited for tiny transfers like images and text. Not killing your browser because it has to load all that in memory Not killing your web server because All that you upload through HTTP post, first gets streamed into IIS Memory, w3wp.exe memory before the ENTIRE FILE finishes uploading .. before it is stored. Which means, ...
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