When plug-in installing is triggered by embedded content click on Internet Explorer Security Warning and choose Install ActiveX Control...

To start installation process click Run.

 

Click I Agree.



Click Next.

Select components to install. Internet Explorer must be selected. Click Next.



Choose the Destination Folder (default C:\Program Files\3dmlw). Click Install to begin the installation.



Click Finish.



If the browser doesn't refresh itself after completing installation, refresh it manually.