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Date: Wed, 11 Feb 2026 21:07:20 +0300
Message-ID: <632092166.20260211210720@yandex.ru>
To: Simon Matthews <simon.matthews@bluepearlsoftware.com>, cygwin@cygwin.com
Subject: Re: Second sshd service (32 bit vs 64 bit)
In-Reply-To: <2bb582c0-26e4-40e0-8612-49275dd06ba4@bluepearlsoftware.com>
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From: Andrey Repin via Cygwin <cygwin@cygwin.com>
Reply-To: cygwin@cygwin.com
Cc: Andrey Repin <anrdaemon@yandex.ru>
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Greetings, Simon Matthews!

> Because of historical reasons, I have a number of Windows virtual
> machines with 32-bit cygwin installed, including the cygwin sshd service.

> It appears to be impossible to start a 64-bit bash session from a 32-bit
> session. However, it there is a way to do this, the rest of the post is
> not relevant.

There's a way, you can tell sshd to use a custom binary as a special service,
and start about anything that way.
Probably you'd need a simple wrapper to bridge the gap between the worlds, but
that should be easy,

> During the transition to 64-bit cygwin, I would like to start a 64-bit
> sshd service on a second port (2222, perhaps). When the transition is
> fully complete, I will remove the 32-bit sshd service.

The current state of 64-bit Cygwin is such that there's hardly any need for
32-bit one, unless you have a VERY specific reason.

I'd suggest to collect your usage information, try your stuff out in a 64-bit
Cygwin, and once it all works up to the expectation, just roll out a switch.


-- 
With best regards,
Andrey Repin
Wednesday, February 11, 2026 21:00:43

Sorry for my terrible english...


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