OneDrive Security Validation Adjustment / Allow Long File Uploads
Currently, it is not supported for OneDrive customers to upload (via O365 Web Portal) for more than 30 minutes at a time. This makes large file transfers to OneDrive impossible. A security validation error occurs at 30 minutes and that validation setting (making it larger than 30) cannot be changed for O365 online. This setting can be changed with an on premise installation.