Make sure you've always got the latest version of Internet Explorer for your operating system by turning on automatic upgrades. You'll get updates to Internet Explorer through Windows Update, including upgrades to the latest version.
To turn on automatic upgrades
Open Internet Explorer for the desktop.
Tap or click the
Tools 
button (or tap or click
Help in the Menu bar), and then tap or click
About Internet Explorer.
Select the Install new versions automatically check box, and then tap or click OK.
Open Internet Explorer for the desktop.
Tap or click the
Tools 
button (or tap or click
Help in the Menu bar), and then tap or click
About Internet Explorer.
Clear the Install new versions automatically check box, and then tap or click OK.
You can also go to Download & Shop if you'd like to get the latest Internet Explorer for your version of Windows.