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Message:

> Hi,
> 
> I have just brought the new version 3.7.5. I was using an old before, but I get the same error.
> 
> Could not negotiate key exchange algorithm
> 
> If I use putty it works, see below.
> 
> The server has changed the to use 'Curve25519'. This should be working, but when I check the 'KeyExchangeList' from the program I old get this:
> diffie-hellman-group-exchange-sha256,
> diffie-hellman-group-exchange-sha1,
> diffie-hellman-group1-sha1,
> diffie-hellman-group14-sha1,kex-strict-c-v00@openssh.com
> 
> Please help ASAP, as we have a production system not working for a lot of users.
> 
> /Torben
> ---
> Looking up host "ei-indberetning.skat.dk" for SSH connection
> Connecting to 85.89.235.173 port 11022
> We claim version: SSH-2.0-PuTTY_Release_0.83
> Connected to 85.89.235.173 (from 10.20.30.94:49202)
> Remote version: SSH-2.0-Maverick_SSHD
> Using SSH protocol version 2
> No GSSAPI security context available
> Enabling strict key exchange semantics
> Doing ECDH key exchange with curve Curve25519, using hash SHA-256 (unaccelerated)
> Host key fingerprint is:
> ssh-rsa 4096 SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Initialised AES-256 SDCTR (AES-NI accelerated) outbound encryption
> Initialised HMAC-SHA-256 (unaccelerated) outbound MAC algorithm (in ETM mode)
> Initialised AES-256 SDCTR (AES-NI accelerated) inbound encryption
> Initialised HMAC-SHA-256 (unaccelerated) inbound MAC algorithm (in ETM mode)
> --

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