openssh-portable VS Win32-OpenSSH

https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_install_firstuse?tabs=gui https://github.com/PowerShell/openssh-portable

The code is here: https://github.com/PowerShell/openssh-portable

Further reading here, here, and here.

The latest version of openSSH for windows has Fido support now. Unfortunately it diden’t make the next win 11 update so is not installed by default but you can install it manually from the Microsoft branch. https://github.com/PowerShell/openssh-portable

I'm using Windows 10 v20H2, Git v2.33.0.windows.2, Portable OpenSSH included with Windows.

When you click the link to the new active repo in the readme from the repo you linked, it takes you here: https://github.com/PowerShell/openssh-portable which is where all new portable OpenSSH development happens. This repo has recent activity, but it's release tags only track up until 8.1

A request for an official answer on CALs for Microsofts' SSH port is about to turn 6 years old:

https://github.com/PowerShell/Win32-OpenSSH/issues/926

I have automated some things "normally" on Windows successfully after installing OpenSSH-win32; https://github.com/PowerShell/Win32-OpenSSH/releases

Are there any other ssh clients that support FIDO2 on windows besides Win32-OpenSSH?

If you're on windows, you need openssh 8.9 to use fido for ssh. https://github.com/PowerShell/Win32-OpenSSH/releases/tag/v8.9.1.0p1-Beta

Unlike Linux, Windows does not come with any tools for setting up an SFTP server. Even FileZilla Server, one of the most popular programs for setting up a FTP server, doesn't support SFTP out of the box. So, are there any other ways to set up an SFTP on Windows? Yes, of course. OpenSSH is a suite of programs for establishing secure connections to the server. sftp-server is one of the utility programs provided by OpenSSH, so this article will walk you through how to set up an SFTP server on Windows using OpenSSH. Originally, OpenSSH was only available on Linux, but Microsoft has ported it to Windows, so you can now use OpenSSH by downloading the zip file from here.

It is mentioned in Win32-OpenSSH's scope that it does not support "VPN Forwarding". Is it the same thing as local/remote port forwarding (ssh -L, and ssh -R)? Can I forward port to and from Windows with Win32-OpenSSH installed on both client and server?

So, personally, I haven't been able to get FIDO2 keys to work at all on Windows, but I didn't try very hard because I'm set-up just fine with GPG for SSH. Apparently there have been a few bugs reported (ref, and linked issue.