Just yesterday I had downloaded a virus protection software to my home computer, only to find out that with it, my Internet did not work. I tried to fix it to the best of my knowledge and nothing was happening. I, then, had a "computer whiz" come over to help me! After all was said and done... because the antivirus was present and it looked to my Internet as potentially dangerous, nothing could be done. I was forced to uninstall it and put another software on there and the Internet magically worked again.
The moral of the story is.... I learned something about the safety and security that has emerged as a result of the advances in the web and other technologies. Computers are very picky when considering what they will and will not let you do nowadays! Is that a good or bad thing? That's the pickle.