I've tried every suggestion here and several on google search (lots of people with same problem) and its still ongoing. I'm trying the free trial upgrade pro (latest version) I just thought it might solve the problem but alas no. I wanted to have the pro after some time on the free version (which is great) but now I'm put off by this problem. Windows 10 seems to have a mind of its own, that edge just does not want to close. The funny thing is I don't use it I prefer Google or Mozilla no problems there.