Kaspersky updated yesterday and seemed to be running fine. This morning, it said not all Kaspersky components were running and suggested I reinstall (or contact support). I updated and the system rebooted. Still problems with "not all components are running". Note, this same "not all components are running" behavior is showing up on my iMac (v10.13.6) and my MBP (v10.12) this morning. I downloaded and re-ran the install on my iMac. The installer script is stuck at 78% installation.
Best answer by kenj