Download Internet Explorer 11 Offline Installer for Windows 7 PC and upgrade your inbuilt web browser to its final version. While you can still download and install Internet Explorer on your PC, it is too old to browse safely and to run modern web applications. But if you have not installed the system updates yet and prefer to use the inbuilt browser of Windows 7, then you may have to use the old and outdated version of IE that is Internet Explorer version 8.
If you are using a Windows 7 PC, you may be using any modern web browser like Google Chrome or Mozilla Firefox, etc. Internet Explorer 11 is the final version of this series of web browsers developed by Microsoft.