Windows 10 Version 1709 (OS Build 16299.x). SEP Version 14 (14.0 RU1 MP1) build 3876 (14.0.3876.1100).
After a Windows patch applied around 1/3/18, SEP started displaying a product error message. The Symantec tech note https://support.symantec.com/en_US/article.TECH248552.html provides a method to fix it, which has been working. However, today I noticed that two Windows 10 computers that received the above MS KB fixed themselves, that is the product error message went away replaced by the familiar green dot.