In Windows 8 operating system, Internet Explorer can be launched from the Metro UI or from the desktop taskbar.
Windows 8 Metro UI
Windows 8 Desktop taskbar
Clicking on any hyperlink (web URL) by default Windows 8 launches the Internet Explorer on Metro UI. Using Internet Explorer options this behavior can be changed to open the Web URL in Internet Explorer on Desktop.
Step 1: Launch Internet Explorer on Windows 8 desktop.
Step 2: Click the Tools icon available on the right hand side and select Internet Options from the drop down list.
Step 3: In the Internet Options window, navigate to Programs tab. Then select Always in Internet Explorer on the desktop for Choose how open links under Opening Internet Explorer section.
Step 4: Click the Ok button to confirm and save the changes.
Now when ever you click on any hyperlink from other applications, Windows 8 will open the web address in the desktop Internet Explorer.