Unable to connect to certain ssh servers : "Unable to read beyond the end of the stream"

Hello,

Which version of RDM are you currently using, and which Workspace are you connected to?
https://docs.devolutions.net/rdm/workspaces/workspace-types

Are there any additional information in the Application logs?
Moreover, please enable the Shell logs and provide the output.

Regards,
Min

Hi Min, thnaks for your reply.
I'm currently using release 2026.2.11.0 64-bit (JIT) of Remote Desktop Manager
I think teh workspace is server as the vault is on my computer.

Here are the logs from the session (debug level 4):

[2026-06-18 12 h 02 min 35 s] Devolutions.ProtocolsSharp: 2026.6.9.1 OS: Windows

[2026-06-18 12 h 02 min 35 s] Terminal font: Courier New [Courier New, fixed=True]

[2026-06-18 12 h 02 min 35 s] Starting SSH, verbose level: 1

[2026-06-18 12 h 02 min 35 s] Setting up connection

[2026-06-18 12 h 02 min 35 s] Connecting to: 10.8.100.161:22 (IPV_ANY)

[2026-06-18 12 h 02 min 35 s] SSH version banner: SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.13

[2026-06-18 12 h 02 min 35 s] SSH session: Unable to read beyond the end of the stream.

[2026-06-18 12 h 03 min 12 s] Devolutions.ProtocolsSharp: 2026.6.9.1 OS: Windows

[2026-06-18 12 h 03 min 12 s] Terminal font: Courier New [Courier New, fixed=True]

[2026-06-18 12 h 03 min 12 s] Starting SSH, verbose level: 4

[2026-06-18 12 h 03 min 12 s] Setting up connection

[2026-06-18 12 h 03 min 12 s] Connecting to: 10.8.100.161:22 (IPV_ANY)

[2026-06-18 12 h 03 min 12 s] SSH version banner: SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.13

[2026-06-18 12 h 03 min 12 s] Sending kex init

[2026-06-18 12 h 03 min 12 s] Received kex init

[2026-06-18 12 h 03 min 12 s] Selected algorithms: sntrup761x25519-sha512@openssh.com(strict), ssh-ed25519, chacha20-poly1305@openssh.com, chacha20-poly1305@openssh.com, implicit by cipher, implicit by cipher, none, none

[2026-06-18 12 h 03 min 12 s] Sending sntrup x25519 kex init

[2026-06-18 12 h 03 min 12 s] SSH session: Unable to read beyond the end of the stream.

Hi,
I finally solved my pb which was the new SSH cypher ChaCha20 Poly1305


After untick Chacha everything is working

Thanks