I have updated Free version of Avast to 17.1.2286 (build 17.1.3394.42) on my Windows 10 Pro 64-bit desktop.
Problem with Avast Online Security Settings in Firefox 51.0.1 (32-bit):
Automatic blocking of trackers is not enabled by default. I set this to enabled and it remains set if I close the browser and reopen later, which is fine.
However I regularly use ccleaner v5.27.5976 (in default mode) to remove cookies, history etc. After using the cleaner Automatic blocking of trackers reverts to disabled. This annoying and never occurred with previous versions of Avast Free.
Can you help resolve this quirk please. Thanks.