I've been using malwarebytes for 3 years with no hiccups, until last month. I experience issues with launching this program. It just doesn't launch 50% of the time. Very disappointed with Malwarebytes. I checked on forums and many users are having the same problems. I decided to install it and will never use it again. It seems they are aware of this problem, but they're not doing anything to fix it. I bought Bitdefender Anti-Virus Plus 2015 and it works great. It removes all the bad stuff.