Thank you for your message.
Could you please clarify what version of Remote Utilities is used on the remote Host machine? It seems that the issue might be caused simply by an outdated Host version - on the provided screenshot, it can be seen that the remote Hosts has the 9-digit Internet-ID codes which were used in the older versions of Remote Utilities. In all of the most recent versions, the Internet-ID codes generated for Hosts are 12 digits long.
In case if some older version of Host is used on the remote machine - please try updating Host to the most version - as of this writing, it's 220.127.116.11 (available for the download here
) or you might also try using the 6.12 Beta 1 version
In addition, please double-check if there are any authentication methods
enabled in the Host settings - currently, the Viewer for Mac/Linux only provides support for the Single password
and RU Security
methods, so if there is any other authentication method enabled, please try switching to the Single password/RU Security.
Hope that helps.