Instructions on installing OpenSSH on your Windows Server.
Windows 2016 and below
Download OpenSSH Go to github.com«, scroll to the [Assets] section. Choose [OpenSSH-Win32.zip] and download it. Once downloaded, unzip the file. Hold down [Shift] + [Ctrl] and [Left-click] in the folder. Choose [Open PowerShell window here]. Paste this into PS and click [Enter].
Open [Settings] ▶ [System] ▶ [Optional Features]. Click [View features] (or [Add a feature]). Select [OpenSSH Server] (and [Client] if desired), then click [Install]. Once installed, open Services (services.msc), find [OpenSSH SSH Server,] and set the [startup type] to [Automatic ]and [Start] it.