I am trying to stop my son from accessing YouTube. I have added the website to the list of blocked sites via My Apps and whilst I now cannot access it on my phone when connected to WiFi I can still access the site on my son's laptop which is defeating the object.
Just tried blocking the domain youtube.com with Child Safe and whilst its effect was immediate on a mobile device it took longer (+5 minutes) on other devices; this is likely due to local DNS caching on the other devices. If the problem persists execute the following in a command shell:
and post the results here — there should be no need to redact the result but do so if appropriate. Example output: