The Ad-aware tool prevents unwelcome advertising programmes from being installed on your hard drive.
The Professional-Version of this programmes also has a setting that blocks pop-ups. The following description explains how to cancel this setting.
How to deactivate the pop-up blocker in Ad-aware 6.0

Open the menu "Setting" by clicking on the cog symbol in the top menu bar. Click on "Ad-watch".

Deactivate "Block possible browser hijack attemps" and "Block suspicious processes". Confirm the alteration with "Proceed".