Hopefully someone in the know can answer this question. I've asked on the sandboxie forums and never got a response. According to the following link: http://www.sandboxie.com/index.php?Windows8 "Note that Sandboxie offers limited protection in 64-bit Windows 8 compared to earlier 64-bit versions of Windows. In particular, the Experimental Protection feature cannot be enabled and is not available as part of Sandboxie on Windows 8. Hopefully, a future version of Sandboxie might be able to rectify this shortcoming in protection measures on 64-bit Windows 8." First hopefully someone can be a little bit more descriptive than "limited". How much protection is sandboxie really affording you with this "limited" protection. How likely is it that something could escape? I think this might have something to do with the "Drop rights" protection of sandboxie. Does anyone know if the problem he is having with sandboxie and windows 8 x64 is the inability to be able to install unsigned drivers in windows 8? If this is the problem there is a work around (ive installed other apps that use unsigned drivers). Hopefully he is able to get it working with Win 8. Sandboxie is one of my favorite security programs.