Pop-up Blocker is a feature that lets you limit or block many pop-ups. This can often lead to issues when a site function uses a pop-up to handle a routine. Following this procedure will allow popups in Internet Explorer 11.

Step 1. Click on the Tools icon Click on the  button and select Internet Options.

Step 2. Click on the "Privacy" tab then select the Pop-up Blocker "Settings"

Step 3. Next add the website you are enabling in the entry box.

NOTE:

• Check to see if you have any toolbars with separate pop-up blocker, such as a Google or Yahoo toolbar. If so, make sure that the toolbar's pop-up blocker is also deactivated.
  
• If you are still having problems you may have a separate pop-up blocking program, such as Pop-up Stopper or Pop-up Zapper.  Search your hard drive for any software with "pop-up" in the name.  Make sure any separate programs are set to allow pop-ups for your online application.