Microsoft is ending support for three versions of Internet Explorer today. If you're still rocking IE 8, 9 or 10 you'll no longer receive updates from the company and will need to upgrade to version 10. You could also install a third-party alternative, or even Windows 10 and take advantage of Microsoft Edge.
Those who are using older versions of Internet Explorer will now be bugged by alerts to upgrade, much like consumers who Microsoft is urging to upgrade to Windows 10. Do note that those with Windows Vista installed will still be able to receive support for IE 9 until the OS itself is dropped in 2017.
If you're dead-set on using old Internet Explorer, a registry hack can be deployed to get rid of the notifications, but we recommend you either upgrade or choose a different browser.
Source: Windows Central