Browsing sites, click on a site it opens in a new window....that works fine. THEN if I want to open a new tab the third window opens and immediately closes all windows. Then I click Explorer again and this is the screen I get the previous window tabs, a new tab, plus this new one. I can't close any window individually only way is to "start fresh" and close all tabs. It's so frustrating. Just been happening since the last update to Windows 10.