Your service administrator sets the maximum file size and types of files that you can upload to the cloud. You'll get an error message if you try to upload a file that's too big or the wrong type, or if you've exceeded your storage quota. You can see the maximum file size and allowed file types on your user preferences page, which you can open from your user menu.
Some browsers can't process very large files when uploading. If that happens, the upload will fail. Try splitting your file into sizes smaller than 5 GB and upload again.
When downloading a file, you must have the Download role in the folder.
If you create a public link to a file that doesn’t pass virus scanning, it can’t be downloaded through that public link.