First, in the computer to open the IE11 browser, and then click the upper right corner of the "Settings" icon, in the pop-up Drop-down menu, click to open the "Internet Options", as shown in the following schematic.
Second, in the pop-up Internet option settings, click to enter the "tab" settings, the following schematic.
After entering the tab setup, you can change the IE11 tab settings here, if you need to open more than one page in a single window, you need to set the option "When you encounter a pop-up window", select "Open the pop-up window in a new tab", and then "open a connection from another program in the following location" below. Selection, select Current tab or window, and when you are finished, click OK at the bottom to save the settings, as shown in the following illustration.
Click OK to save, and then use the IE11 browser to open a new page or window, it will not pop up a new window, but in the current window open, you may wish to try it, if you do not see the effect, please restart the computer to see.