As I wrote in my review, the freeware version deleted an important file from my PaintShop Pro program. My worry about downloading and using Malwarebytes is that it might inadvertently remove a file critical to my operating system.

I think the program may work well for some, but it may not be the best for all environments. It was a problem for me. After paying for it and running it once I did a search and could no longer find the executable and I am still getting a hijacked browser, which is what I wanted it to clear. It may not be a well-tested program for all environments.

The program works fine... my computer may be the problem, or the fact I have another protection and they don't work together.

I can't answer for someone else. The software did great for me when other Antivirus program failed.
It's free for 15 days I let it clean my computer run for a day or 2 unistall then get 15 days again if I need it.