There is a case when your hosting provider (110mb.com being one of the examples) doesn’t allow more than 1 simultaneous connection per user for file transfers using FTP as it will be restricted from their FTP server due to some security reasons.
And if you are using Filezilla, then by default it will try to connect multiple FTP connections. It can connect maximum 11 connections i.e. 10 connections (simultaneous file transfer) +1 (browse the server files) per tab. If it is more than 11 simultaneous connections then either router, firewall or ftp server is compromised. You should report to your hosting provider or site admin.
FileZilla uses multiple FTP sessions. One session gets used purely to browse the server. The other sessions get used to do the file transfers. That way, you can always browse the server even during transfers. But, If you limit connections to 1 only, there is a major drawback: You cannot browse the server anymore while a transfer is in progress!
[Problem] So, what error you get and how you can fix it?
Response: 421 I can't accept more than 1 connections as the same user
Error: Could not connect to server
Screenshot of the error:
Either ask you site admin or hosting provider to allow multiple connections or don’t browse server files while file transfer is in progress ;).
Solution 2 (preferable if solution 1 is not the option)
- Open Filezilla.
- Goto to File and then select Site manager or simply click ctrl+S
- Click on site on the left bar showing in site manager box
- Click on Transfer Settings tab (3rd tab) on the right side bar
- Check limit number of simultaneous connections
- Then, make it 1 showing below the check box having text "Maximum number of connections:"
See below image for the same:
For more details check filezilla wiki: https://wiki.filezilla-project.org
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