Moved this provisionally to the Corporate User Asssistance sub-forum but it may be best suited in the actual product section for whatever software you are using.
Would ePO or maybe VSE be the right one? If so I will move it.
In most cases when installing programs, unbeknownst to the user, software is bundled with-in the installation.
As Ex_Brit stipulated, being unsure of which software you are using. Consumer-Enterprise ? This may or may not be beneficial to you.
As to how to "Block" these PUPS- Adware from installing, is to quite simply take note of the programs
which seem to be causing unwanted issues. I noticed you specifically mentioned "Search Protect". If it is anyway related to the "Conduit Toolbar", by all means you need to uninstall it.
There is more to the removal of this program, than simply removing from the "Programs/Features"-Add/Remove in your control panel. Here is the link from the "Microsoft Community"
Hope this helps somewhat....
Sorry, We are using VSE enterprise 8.8
OK, I moved this to VSE as they may know best how to play with settings on this.