I was not able to locate the older article either.
As you use Pega 7 Platform, Internet Explorer automatically prompts you to download Microsoft ActiveX controls (also known as OCX files) to support special functions.
You can download the ActiveX controls all at once using an installer BAT file. This file is named OCXInstaller.zip, available on the Resource Kit in the Pega 7 Platform distribution media. Once downloaded, ActiveX controls reside in the Downloaded Program Files directory.