Can you install using the PS and LR standalone installers from here?:
CC Version 18.104.22.1688, both on desktop (Win 7 Pro) and laptop ( Win 10 Pro).
CC crashes continually, even when unattended - nothing being asked of it. System log shows CC crashed 331 times in last 30 days.
Download and install standalone has and is never a problem. Only problem is that the direct download pages are never the current version and CC wants to update just installed app, during which it crashes multiple times - never an error message, just stalls and usually a CC restarting window.
Common Utilities, yes. Primarily, BitDefender Total Security 2018. It just sits there when direct downloads tale place and files are installed. Sits there with no error or warning messages when CC goes crazy and crashes/restarts and gives no problems with any other file/program download or install. If there is an issue, it gives a clear indication, but that is extremely rare.