I am still having this problem, although I have something of an update... I recently purchases a new Windows 8.1 Pro tablet, so it is running the exact same OS (with the exact same browser) as my desktop and laptop (where CCleaner is not removing cookies from its list). I installed CCleaner and noticed that when I run it, the cookies are removed from the list. Again, same OS, same browser, same settings. Maybe something got corrupted in CCleaner when I upgraded my desktop and laptop to 8.1? When I uninstalled CCleaner on my desktop and reinstalled it, I still have the same problem. However, I note that I don't get the same options as a clean install (as I am not asked to install the Google toolbar, etc.). Are there some settings in CCleaner which are left upon uninstall? Maybe I need to delete registry entries or find a way to do a complete uninstall? Again, just a theory, but I can't rule it out unless I completely remove all traces of CCleaner before reinstalling...