I experienced problems and eventually they got more serious. Malwarebytes tech requested access to my PC and said I needed help from a specialist and transferred me to a person with a strong mid eastern accent who claimed he was in Canada. He screened my PC and told me I had a baaad virus and he could fix it for $100. I bid adieu and noticed I now had a missing MSVPC100. Dll; it could only have happened when he downloaded his virus checker "clean my pc." This is just about impossible to fix. These folks are unscrupulous, do not load even the free trial in your pc. I tried to rate it a quarter star and the system would not let me, thus a star.