What should I do if I get an error message when uploading files?

If an upload fails on more than one browser and device, the problem is usually the file itself or a temporary connection issue rather than your computer. A few quick checks clear most errors before you need help.

• Confirm the file type is one that is accepted, most often a print-ready PDF, and that it is not password protected or corrupted.
• Check the file size, and try re-saving or flattening a very large file, since oversized uploads can time out.
• Refresh the page, pause browser extensions or ad blockers, and retry on a stable connection.
• Re-export the file from your design software if one file keeps failing while others upload fine.

If the error still appears, contact 4OVER4 customer support with the exact error message plus your file details, dimensions, page count, quantity, paper type, and finishes, so the team can troubleshoot or set up an alternative way to send the file.