Received too large (2999993 B) SFTP packet, Connection aborts

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CheefPanda
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Received too large (2999993 B) SFTP packet, Connection aborts

Could I get some clarification on this error I have been receiving from my FTP server:
Received too large (2999993 B) SFTP packet. Max supported packet size is 1024000 B.
Copying files from remote side failed.
I originally encountered this issue with downloading a 1.3GB tsv file and have been able to consistently repeat this error attempting to download a 2GB iso file from my SFTP server.

Changing the Transfer preferences to a speed limit of 1024 KB/s doesn't cause any issues. Once the download speed goes above 1MB/s the connection is aborted.

I also tested using FileZilla and the web page interface of my SFTP server, I was able to reach 60MB/s+ through both methods.

Using Windows 10 Enterprise
Issue is consistently repeatable on WinSCP 5.21.5 when reaching any speed above 1024KB/s
Using SFTP, Server does not allow SCP.
Using Commander GUI

Thanks
  • Winscp.Ftperror.log.zip (4.66 MB, Private file)
Description: Speed is set to unlimited when error occurs. Logging level set to debug1

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martin
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Re: Received too large (2999993 B) SFTP packet, Connection aborts

Thanks for your report. Though, there's no "Received too large (2999993 B) SFTP packet" error in the log. Did you post the right one?

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