I am using sp2010. I try to upload a file which is 19gb in a document library. The extension of this file is .DFSU. I see no error. I still see the popup where you can browse the file after I press on the OK button. Whats the issue. Is the file to large or is the extension not OK?
19GB is way way over the default upload size limit. Even if you increase the limit the supported max file size is 2GB.
More, and source: http://blogs.technet.com/b/praveenh/archive/2012/11/16/issues-with-uploading-large-documents-on-document-library-wss-3-0-amp-moss-2007.aspx and http://yalla.itgroove.net/2013/01/sharepoint-2010-file-size-upload-limits-the-essential-mix/