As long as I don't click on the Malwarebytes icon on my Chromebook's Chrome browser the browser guard seems to be working as it definitely is blocking ads. However if I click on the icon to change settings, etc it will crash and I have to restart it. When I go to my Chrome extension setting for browser guard, the settings for ad blocking, etc are not listed there so it does need improvement. It does work great on my Mac laptop and on my Windows PC as well. Most of my Android, Mac and Windows Google apps are synced with my Chromebook. No doubt there will be virtual OS's as well in the future. My Chromebook is becoming my go to machine more and more for the majority of my activities. A synced Chrome browser is like a portable OS if you are on another computer. Of course an Android phone reduces the need for using another computer but it can't do everything.