Box Sync 4.0 provides detailed user notifications if there an issue syncing a file or folder.
Box Sync does not support the following file types (see Which File Types are Ignored and Which are Blocked? for detailed information):
- Outlook PST files
- QuickBook files
- Google Docs/Spreadsheets (web only documents cannot sync to your local machine)
All devices with Box Sync installed.
Upload these types of files using the Box website.