Trojan, hijacker and popup techniques are three main ways to introduce Protection Center (ProtectionCenter) adware into the working stations. As soon as the program is delivered and installed, it attempts to reset system settings in order to avoid restrictions for such activities as sudden interrupting other apps with its chromes and alerts and taking control over web-browser of the infected machine.
Remove Protection Center adware if the infection has been introduced according to any of the three techniques named above or in another way for, as you can see, it is a misleading and harmful program. The aim of its introduction is to finally get the activation fee as its trialware is the infection that demands the activation; and until you get rid of Protection Center you will be receiving its misleading notifications and it will be creating discomfort for you.