Post a reply

Before posting, please read how to report bug or request support effectively.

Bug reports without an attached log file are usually useless.

Add an Attachment

If you do not want to add an Attachment to your Post, please leave the Fields blank.

(maximum 10 MB; please compress large files; only common media, archive, text and programming file formats are allowed)


Topic review


Re: curve25519-sha256 kex not supported in WinSCP

This request has been added to the tracker:

Can you send me an email, so I can send you back a development version of WinSCP for testing? Please include a link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.

You will find my address (if you log in) in my forum profile.

curve25519-sha256 kex not supported in WinSCP

WinSCP Version 5.17.5 on Windows 7 x64. It has not worked on any previous version of WinSCP either.

Using SFTP. Using GUI.

The remote server is configured with:
KexAlgorithms curve25519-sha256

Please note that curve25519-sha256 is the newer name for the deprecated

I get the following error when trying to connect:

Couldn't agree a key exchange algorithm (available: curve25519-sha256)
OK Reconnect Help

Log attached.