Just about 100% of the time, after a session on my PC (both local and internet) when I click on “Turn Off Computer”, a window pops up on “ending” ccSvcHst and to “wait” until it’s finished. It’s been going on now for a couple of months and getting old. I found an old post (2010) about the issue with a possible relationship to the number of items in the activity tray. I have 7 and have had them for many years without this problem until lately. I’m running XP, SP-3, FireFox 52.1.1 esr, 22.9.1.12 NIS.