I'm sorry you had a bad experience with version 7.x.x.x. However, may we have a look at Host logs that didn't come online? Did you manage to ugrade the hosts to version 7.x.x.x? Or were you connecting to v 6.x.x.x. hosts?
I had noticed earlier this afternoon that the host was not running on the machine that I mostly use as viewer (which I re-started two days ago), so having then seen Karsten's post, I started up a couple of other local machines which had been shut down. In both cases the host did not start automatically, even though the service state in host properties was set to auto start. They worked fine after I manually started them. One is 32 bit XP, the other 64 bit W7.
Looking at the host logs, the host had been started immediately after upgrading to version 220.127.116.11.
Auto start was working OK on the recent 18.104.22.168 beta 4, though I recall that one of the recent betas fixed a problem with that. Has that fix been carried over correctly into 22.214.171.124?
On the other hand, I've just turned on another local machine, and its host *did* start automatically. Perhaps the problem is machine dependant, or doesn not happen every time. Does starting the host depend on any other services being already running, which might be slow starting?
Both machines where Host didn't autostart have Avast free antivirus, as do all my other personal machines. I have sometimes (but by no means often) had a false positive fr om it on downloading or installing or first time running new versions of Host and Viewer, but it has always let me create an exception. In any case, I don't think it's an antivirus issue, since I can stsrt the Host manually on both machines.
I do have a rather old version of Spybot Search and Destroy on those machines, which uses a lot of CPU during startup. Maybe that is causing the Host service to take too long responding to its start request. I could try disabling it and see what happens. The third machine I tried does not have Spybot S & D, and the host autostarted OK.
Other machines that I support have Avast Business AV, but that also lets me create exceptions if I get a false positive. However, some of those machines are also slow to start for various reasons, which makes me nervous about doing a remote machine restart. I have sometimes had to go in person to start the Host after a machine restart, or use an alternative remote access tool wh ere one is already installed.