For a given buffer, the server might need to allocate internal data structures. The transfer would start out speedily enough then slowly degrade down to only a few hundred Kbytes/sec through about 70% completion, then suddenly finish up the last 30% in a few. The TCP window is the maximum number of bytes that can be sent before the ACK must be received. WinSCP Session.ExecuteCommand () is timing out. Note If the problem repeats, try turning off 'Optimize connection buffer size'. If you really need to use SCP for some reason (does not seem to be the case), you can try to disable the environment adjusting. To fix this, go to the 'Advanced' window and change the SFTP protocol setting like this: 1- 2-Using SCP: The TCP window is the maximum number of bytes that can be sent before the ACK must be received. We also need to use winscp connection to VCSA to transfer log files, certificates or back scripts and other configuration files, etc. Josh Shamburger attached sandremo.png to Optimize Connection Buffer Size sandremo Josh Shamburger added Optimize Connection Buffer Size sandremo to 1 Day Task Board nontervislu chevy sonic won t go into gear. moist temperate coniferous forest joshuatheesaint twitter. When opening a connection to VCSA, you get the following error: Host is not communicating for more than 15 seconds. Josh Shamburger attached sandremo.png to Optimize Connection Buffer Size sandremo Josh Shamburger added Optimize Connection Buffer Size sandremo to 1 Day Task Board nontervislu This does not happen with SMB. You can either 'Optimize connection buffer size' or increase the 'Timeout' for 'Server response timeout' in the 'Connection' tab in WinSCP to a large number like 2-3 mins. But as you have hinted yourself, you can workaround it using WinSCP call command and FTP commands RNFR and RNTO: call RNFR myfile.7z.uploading call RNTO myfile.7z. To resolve this, you will need to change the login shell for root to /bin/bash using the change shell command below. POST actions are typically form submissions. WinSCP is a free SFTP, SCP, Amazon S3, WebDAV, and FTP client for Windows.

The buffer settings seemed to work for me for about a month, then it stopped working.

Winscp optimize buffer size