I don't know. It could be that the older macOS version has an older
version of OpenSSH that creates a known_hosts entry that JSch chokes
on. I need to reproduce the issue before I can say for sure.
DRC
On 1/30/26 10:44 AM, Richard Ems wrote:
Hi DRC,
Many thanks for your answer.
I started now a VNC session for this user on a static port, I can
connect from my OpenSUSE 15.6 laptop without issues.
But the user supposed to connect to this new VNC session gets the
error messages attached.
He is connecting from MAC 13.4.
Other two users connecting with MAC 15.7 and 26.1 don't have these issues.
Could the "old" MACOS be the cause of this errors?
Many thanks again!
Richard
On Friday, 30 January 2026 at 10:51:36 UTC-3 DRC wrote:
That error comes from JSch, the TurboVNC Viewer's built-in SSH
client.
I think it may be due to either a badly-formatted SSH known_hosts
file
or possibly an incompatibility, such as OpenSSH writing a known_hosts
entry using an encryption algorithm that JSch doesn't support. I
will
try to reproduce the problem and see if I can make the TurboVNC
Viewer
handle it more gracefully.
On 1/28/26 9:26 PM, Richard Ems wrote:
> Hi all,
>
> For a customer I configured a new workstation with Rocky Linux
9.7 and latest versions of VirtualGL and TurboVNC.
>
> The users connect from MacOS laptops with TurboVNC 3.2.1.
> Two users can connect without issues, one gets the error message
below.
>
> Any ideas what may be the issue?
>
> Thanks,
> Richard
>
> PS: more info: all 3 users can connect to an older workstation
without issues. The two users that can connect to the new
workstation have ARM MACs. The one that cannot has a Intel MAC.
>
>
>
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