Thanks, as I said trying to remove the MSN news feed on start up....
Just Firefox, not IE.
Not a techie but when I first bought Win 10 I installed the classic shell and removed Edge and had no problems for a while until MSN started appearing which I thought had been removed earlier. I've also checked the start-up Task Manager but there's nothing in there either, also Firefox has always been set as my home page.
I've seen your last link about the three dots in the top right hand corner but can't find the page for some reason ?