Overview
If you are receiving the following error while uploading files via FTP or FileZilla, it means your storage quota limit has been reached:
Command: STOR filename.pptx
Response: 550 Can't access file, no file handle.
Error: Critical file transfer error
This is not a connection issue. This error occurs when your FTP folder has reached its maximum storage limit assigned to your hosting package. The server will automatically block any new file uploads until space is freed up or your package is upgraded.
Common Symptoms
- File uploads fail with "Critical file transfer error"
- FTP client shows "550 Can't access file, no file handle"
- Some files upload successfully but others fail
- You are able to log in to FTP but cannot upload new files
Cause
Every hosting package includes a fixed storage quota limit. For example:
- Basic Package → 10GB storage
- Business Package → 20GB storage
- Premium Package → 30GB storage
When your folder reaches this limit, the server automatically blocks further uploads to protect the storage allocation.
How To Resolve
Option 1: Delete Unnecessary Files
- Log in to your FTP account using FileZilla or any FTP client
- Browse your folders and identify old or unnecessary files
- Delete files you no longer need to free up space
- Try uploading again
Option 2: Contact Our Support Team
If you believe this is an error or you need assistance checking your storage usage, please contact our support team:
- Email: [email protected]
- Support Ticket: Log in to your client portal and open a support ticket
- Response Time: Within 24 hours on business days
Prevention Tips
- Regularly clean up old and unused files from your FTP folder
- Consider upgrading your package if you frequently hit the storage limit
- Compress large files before uploading (e.g., ZIP format) to save space
