Why an upload failed

Also asked as: upload error · file not supported · upload limit reached · duplicate file

Uploads are rejected for a small number of specific reasons. Match the message you saw.

MessageWhat to do
This file type is not supportedConvert to .mp4, .mov, .mp3, .m4a, .docx or .pdf. The message lists the accepted formats.
PDF files must be 500 MB or smallerSplit the PDF, or export a lighter version.
PDF uploads are not enabledThe format is switched off for your account. Contact support.
Already exists in your libraryA file with that name is already there. Rename it, or use the existing upload.
Upload Limit ReachedYou've used your annual media hours or text pages. Select View Plans to upgrade.
Cancelled or FailedThe transfer didn't complete. Upload the file again.

Unsupported files are rejected before the upload begins, so a file that fails this check uses none of your allowance.