This problem has gone on for a long time and I finally need and want to cure it. This occurs on my laptop and my desktop. I just replaced my HDD in my desktop, and thanks to help from here I easily clean installed Win 10 two days ago using ISO dvd. I use OE11 as well as Edge on occasion. Today I was going to arrange my Favorites bar as I had it previously. I clicked the >> to show the entire list and it now runs for 4 pages or more, mostly made up of multiple repetitive listings of the original smaller number. Most are followed by (2) or (3), etc. denoting the repeated listings. The problem keeps growing and I need to stop it and get rid of all of the many duplicates. What is causing this to continue to occur and how can it be stopped? Many thanks for an assist.