I am running RU 18.104.22.168 Viewer and Host through RU Server version 2.6. It generally works well but I will occasionally (maybe once in 10 connections) go to logon to a computer that shows online only to have it go offline. I can then attempt to logon to the offline computer and it will go online and [censored] so I can control it. I managed to actually catch the event in the Viewer log today but wasn't sure what the best way to provide that to you would be. I can show you a small snippet that shows the crux of the issue here:
First, I attempt to connect to the online PC and it goes offline 10-04-2018__11:05:01__834 Connection #387865. Connection to "IT-Support.CINCYBLIND.LOCAL". Mode: <Authorization>. Connecting... 10-04-2018__11:05:01__839 InetConnection #387865. Internet connection to IT-Support.CINCYBLIND.LOCAL (ru.cincyblind.org:5655). 10-04-2018__11:05:01__970 InetConnection #387865. Method "Connect" - OK. IT-Support.CINCYBLIND.LOCAL connected to ID server: ru.cincyblind.org. 10-04-2018__11:05:02__053 InetConnection #387865. Socket error. Name: "IT-Support.CINCYBLIND.LOCAL", host: "ru.cincyblind.org:5655". Exception class: "EIdConnClosedGracefully". Message: "Connection Closed Gracefully.". 10-04-2018__11:05:02__063 Connection #387865. Connection to "IT-Support.CINCYBLIND.LOCAL" failed. Mode: <Authorization>. 10-04-2018__11:05:02__067 Context #387865 removed. Mode: <Authorization>.
Then I attempt to log on to the offline PC and it goes online and connects 10-04-2018__11:05:18__514 Connection #736329. Connection to "IT-Support.CINCYBLIND.LOCAL". Mode: <Authorization>. Connecting... 10-04-2018__11:05:18__519 InetConnection #736329. Internet connection to IT-Support.CINCYBLIND.LOCAL (ru.cincyblind.org:5655). 10-04-2018__11:05:18__650 InetConnection #736329. Method "Connect" - OK. IT-Support.CINCYBLIND.LOCAL connected to ID server: ru.cincyblind.org. 10-04-2018__11:05:19__662 InetConnection #736329 - IT-Support.CINCYBLIND.LOCAL need. Server version: 66003 10-04-2018__11:05:19__865 InetConnection #736329. IT-Support.CINCYBLIND.LOCAL - detection of the direct route - started.
Yup, I thought I would start with the public route in case others run into the same problem. But if we need to go the private route we can do that too. The log has some pretty detailed data about my infrastructure so I definitely would prefer to keep that as private as possible. :)
I recommend that you upgrade your Viewer, Server and at least one of the Hosts to the latest beta version (available here https://www.remoteutilities.com/download/beta.php ) and see if the issue persists with that Host. There has been a lot of changes made in terms of stability improvement in the latest beta version.