Loaded Microsoft security essentials and found out I have a Trojan Downloader on my computer. I'm unable to remove from PC, even though other users are able to run Microsoft Essentials and are advised virus has been removed. When I, as the PC administrator attempt to run, I cannot and receive an error code Ox800705b4 not allowing me to turn on real time protection. In addition I receive a virus alert saying computer is now infected and I need to buy someone's PC security tools to remove.Has anyone has this problem and how can I remove?Thank you.2 people got this answerI do too