First be sure you did this: Internet Explorer: Tools (from the menu bar) / Manage add-ons / Show All add-ons, then select the offender's, and click disable or remove.

    

 



Then do this

Open Internet Explorer, click on the gear icon IE Icon Gear in the upper right part of your browser, Or Tools (from the menu bar) then click  Internet Options.

In the Internet Options dialog box,  in the "Tabs Change how webpages are displayed in tabs", section
 click on the Settings button

then select your first home page