I'm using firefox for linux (arch) v56.0, and when I upload something to google drive, the site says its uploaded successfully (has green check mark), but the file itself is 0 bytes. Its not all file tho, since i'm able to upload some file successfully. I got the same problem in v55 too. I did some research, and the only information I got is from this link : https://productforums.google.com/forum/#!topic/apps/wlX-KnTSeVQ;context-place=forum/Apps I haven't tried for another browser, but it works perfectly fine in windows. Any advice ?