I have one client that is a Windows 10 workstation but shows up as Linux in the Managed Devices list in KSC. When I check device accessibility it says it is inaccessible. Remote installation of KES or the network agent fails because it says it is not compatible with this OS. It resolves to the correct IP address for the computer. I have another client that shows the OS correctly as Windows 10 in KSC but otherwise exhibits the same behavior. The KES client cannot be installed remotely on that one either.
klactgui.exe does not show these workstations in my list of available workstations.
KSC 11 was recently upgraded from KSC 10 on the same server, the remaining 30 workstation clients have all been upgraded successfully. My KSC version is 22.214.171.1241.