Kaspersky Internet Security 2015 Upgrade for 3 computers

The program is unfortunately not recommended. On all three machines, there were significant problems later. Browser could not be opened, the Internet could no longer be started, online banking was no longer possible to name just a few weaknesses. I do not explain, because I had previously Kaspersky installed on the computers. I had to change some program side and preset security recommendations, but this is actually not recommended for a virus software. Then I do not need more virus software. The "Help recommendations" Kaspersky have not helped me. Other users had reported in the forums of similar difficulties. Teste now on and will think if after the expiry of the subscription Kaspersky again comes into question.