yes, the trial version is good for 30 days and could be blocking the links.
Since you bought a boxed copy, I would uninstall the trial version, reboot and then install the full version.
If you had not purchased the boxed version, I would have suggested that you go to the free MSE from Microsoft. That is what I have running on my Windows 8.1 machine. By the in Windows 8, MSE is called Defender.