I have used the previous version and this has always works flawlessly. Had I known that the upgrade to the latest version brings such massive problems and limitations, I was switched to a different software and have Kaspersky Internet Security 2015 never purchased and installed. Thunderbird has suddenly no longer retrieve the mail one of my accounts, some websites are classified as "not trustworthy" (Firefox) and the Acrobat Reader menu bar disappears as soon as you move the mouse over it. The latter may sound ridiculous at first, but is just annoying and inconvenient. For me, it is totally unacceptable that I have autonomously search after you install a program, the Internet and forums to find out how I will fix various bugs and something I've also never seen in any software. That was definitely the last time that I have bought this product!