How to Install an ActiveX Add-on
ActiveX is a programming framework developed by Microsoft for use with its Internet Explorer Web browser. The framework allows developers to extend the functionality of Internet Explorer and add helpful features not included with the browser by default. The Adobe Flash Player and Windows Media Player plug-ins are two examples of applications installed in Internet Explorer using ActiveX controls. Once your settings have been configured properly, installing an ActiveX add-on is a quick process.
Open an Internet Explorer browser window.
Click "Tools" in the top menu bar and select "Internet Options."
Select the "Security" tab, and then click the "Custom level" button found near the bottom of the dialog box.
Scroll down the list of settings until you reach the "ActiveX controls and plug-ins" heading.
Find the sub-heading labeled "Download signed ActiveX controls" and select the "Prompt (recommended)" option.
Click "OK" once to confirm your change, and then click "OK" again to close the Internet Options menu.
Navigate to the website containing the ActiveX add-on you want to install.
Click the small bar that drops down from the top of the screen after the website loads, and then select the "Install ActiveX Control" option. Follow any additional on-screen prompts to complete the installation process.