Zendesk Attachment Too Large or Upload Refused
Quick answer
Uploads fail when a file exceeds the per-file size cap or the account runs out of storage. Compress the file or free storage.
Most likely fix: Compare against limits
How to fix it
Try these in order — the most common fix is first.
1. Compare against limits
- Check the file size against your plan's attachment limit
Did this fix it?2. Check storage
- Review storage usage in Admin Center and delete old attachments or set a deletion schedule
Did this fix it?3. Share a link instead
- Compress the file or host it elsewhere and paste a link
Did this fix it?
Symptoms
Attachments are rejected or tickets cannot be updated with files.
Why it happens
- File exceeds the per-file limit
- Account storage allowance used up
- Blocked file type
This guide also covers
- zendesk attachment size limit
- zendesk attachment not uploading
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