Internet Explorer (IE) updates are included as part of Windows system updates, so as long as you keep Windows updated, so is IE.
Just run Windows Update from your start menu to see if any updates are available.
Otherwise, the system will help you turn automatic updating on and install the latest version of Internet Explorer that works with your operating system and computer.
Each of these has multiple versions out there at any given time, as updates are released, and some people opt to update, but others don't. Microsoft fixes bugs and security issues and adds useful features to newer versions of IE that they release.If your old computers are running Windows XP or Vista, you may need to install Microsoft Service Packs before upgrading to a newer browser.Note: If you are using any of these browsers mentioned below, they will automatically prompt you to upgrade whenever a new version is detected.When a new version is detected please follow the instructions on your screen to upgrade. Figuring out the Service Packs you need and installing them can be time-consuming.Microsoft automates the process by installing them for you and upgrading your browser after you turn on automatic updating. Review the page and click the “Microsoft Update” link in the page’s "Check Your Settings" paragraph.Your best bet is to update IE directly from the browser's developer - Microsoft. Internet Explorer will update (or upgrade) automatically, keeping all of your favorites, cookies, form history, and saved passwords perfectly intact. It's included as part of Windows 10 and so is only available if you're using Windows 10. if you're interested in trying out Edge in Windows 10 but don't yet have this version of Windows. You can also install IE11 in Windows 7 by downloading and installing it as directed above.Some websites and online applications require recent browsers in order to work properly, so you may be prompted to download a new browser or upgrade your browser from time to time.You use it to navigate to Web sites, and it displays those sites for you, allowing you to follow links and explore everything the web has to offer.There are many different browsers available, but four of them account for over 95 percent of all browsers in use today: Internet Explorer, Firefox, Chrome, and Safari [source: Stat Counter].