In this guide, I am gonna show that the first method the OLD method is not working anymore for installing IDM (Internet Download Manager) extension. So I gonna show the easiest way to install or add IDM extension the new way.
Install IDM Integration Module extension from Chrome Web Store using direct link below:
https://chrome.google.com/webstore/detail/idm-integration-module/ngpampappnmepgilojfohadhhmbhlaek