I am running MBAM 2.0.2.1012 (premium) and frequently get the error message "Malwarebytes was unable to load Anti-Rootkit DDA Driver." There is an image of the error message in another topic. I originally posted as a reply the topic linked in the previous sentence, but I was requested to start a new topic. Rebooting the computer apparently "fixes" the problem, but only for an arbitrary time, since the error message seems to appear almost every time a scan is run. I have not tried dis-enabling rootkit scanning, because that would not solve the issue. That would only mean I'm not getting to use a feature that I'm paying* to be able to use, and it's certainly not desirable to have to reboot in order to complete the scan process. Occasionally I choose "no" (if I am in the middle of another task on the computer when this occurs). Sometimes the error message reappears if I choose no. On one occasion, I had multiple error windows (with this message) at the same time. I am actually having other issues with MBAM (regarding the scheduling feature), but I reported those via email to support. I figured I would look in the forum for a resolution to this issue, since it didn't occur to me when I was reporting my issues with the scheduler. BTW, I'm running Windows 7 x64 on both of my computers and the same message occurs on both of them. *I'm not sure whether rootkit scanning is a feature on the free version, but regardless, it is a feature that I am supposed to have but which causes the scan process to not me to have to reboot the system frequently, and seemingly unnecessarily.