Installation of trial version seemed OK, services started etc and I was able to add a couple of sensors. All was working. However after a reboot the Core Server Service does not start. Status remains as "starting". Stopping and restarting from the Administration tool makes no difference, Windows still shows it as "starting" even when the admin tool says its stopped. I have to kill the process from Task Manager, then restart, and repeat this a few times before it the service starts properly.
PRTGT Version V126.96.36.19929 Windows 10