RDM 2026.3.10.0 SSH Shell attempts SFTP when SFTP is disabled

RDM 2026.3.10.0 64-bit on Windows is making a separate SFTP connection whenever I open an SSH Shell session, even though SFTP is completely disabled for the entry.

The target is a Keenetic router running KeeneticOS 5.01.C.6.0-1. Its SSH server provides the CLI but does not provide SFTP.

RDM SSH Shell settings:

• Automatically open the file transfer tab: OFF
• Show files in tree view: OFF
• Show local files: OFF
• All other SFTP options: OFF
• SFTP toolbar button: OFF

The exported entry XML also confirms:
<ConnectionType>SSHShell</ConnectionType>
<ShowFilesInTreeView>false</ShowFilesInTreeView>
<ShowLocalFiles>false</ShowLocalFiles>There are no SFTP-specific properties in the entry.

I also tested:

• enabling/disabling "Automatically open the file transfer tab" and reconnecting;
• Open → Open (ignore specific settings);
• a clean/global Sessions configuration with no SFTP settings.

The behaviour is unchanged.

Evidence
The normal SSH connection works correctly and reaches the Keenetic CLI:
User authenticated successfully using password method
Sending session channel open request
Received channel open confirmation
Sending pty request
Received channel success
Sending shell request
Received channel success
...
KeeneticOS version 5.01.C.6.0-1
(config)>

The ProtocolsSharp SSH log contains no SFTP subsystem request.

However, the Keenetic logs show a separate SSH connection immediately before the normal SSH session:
Child connection from 192.168.0.10:60193
Password authentication succeeded for 'user'@cli from 192.168.0.10:60193
Core::Authenticator: access to "sftp" denied for user "user".
Core::Session: client disconnected.

The normal SSH CLI connection then follows and works correctly.

So the issue appears to be that RDM is initialising an SFTP connection independently of the SSH Shell connection, despite SFTP being disabled.

Could you please confirm whether this is a known issue/regression in RDM 2026.3 and advise how to prevent the SFTP connection from being attempted?


<?xml version="1.0" encoding="utf-8"?>
<RDMExport>
<Connections>
<Connection>
<AppVersion>2026.3</AppVersion>
<ConnectionType>SSHShell</ConnectionType>
<ID>0000000-00000-0000-0000-000000000000</ID>
<Name>test</Name>
<OpenEmbedded>true</OpenEmbedded>
<Terminal>
<Host>192.168.0.1</Host>
<ShowFilesInTreeView>false</ShowFilesInTreeView>
<ShowLocalFiles>false</ShowLocalFiles>
</Terminal>
</Connection>
</Connections>
<DatabaseID>0000000-00000-0000-0000-000000000000</DatabaseID>
<Version>2</Version>
</RDMExport>