I did have something funky happen. I'll try to explain, so bear with me.
I have a Win 8.1 laptop that I use and I installed Edge when it was available for 7,8 and 10. When I installed it on my laptop it was in Beta (even the Icon says Beta on it). From a recent MS update, on a restart Edge opened up. It looked like a new browser and I was asked if I wanted to import Favorites from IE. I said no and thought Edge Beta was replaced with a new out of Beta browser. I closed the window and noticed that I had 2 Edge icons on my taskbar One that said EDGE and the other that said Beta. I opened the Beta and all my favorites were still there. So now I have 2 copies of Edge. There was a Edge shortcut on my desktop.
On my Win 10 I upgraded the Edge browser to Edge Chromium from the MS website about 3 months ago. Went through a couple of MS updates and I don't see this happening to my Win 10 computer.
A couple of things from this article..
He said that he couldn't close the browser. I hit the close button and it closed.
It asked me if I wanted to make it my default browser. As they all do.
He said that there were no way to uninstall. Both my laptop and desktop it's located in Program and Features in the Control Panel.
Basically what happened the Edge browser that came with Win 10 was upgraded to Edge Chromium. A lot of people didn't use Edge they were using Google and just let it sit. All this is, is an update to a MS program that launched at start up to let you know that is was updated.
Yes MS wants you to use their product rather then Google's.