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firefox won't auto update or manually update, Opendns is blocking sites

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Open dns blocks sites such as Victoria's secret and an art studio I want to go to for nudity, lol. I don't remember loading it onto my computer and I don't have admin access to Open dns. So I can't uninstall or unblock sites. Also I get a message that Firefox could not update. I have the latest version of Firefox.

Open dns blocks sites such as Victoria's secret and an art studio I want to go to for nudity, lol. I don't remember loading it onto my computer and I don't have admin access to Open dns. So I can't uninstall or unblock sites. Also I get a message that Firefox could not update. I have the latest version of Firefox.

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"...I don't have admin access..."

Talk to the administrator, OpenDNS can be used to block access to sites and that may be the reason it is on your system.

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I don't have an administrator, so I don't know who to ask. I contacted OpenDNS and they replied: You have a Netgear router on your network with Live Parental Controls enabled.

Please go to https://netgear.opendns.com/sign_in.php to change your Live Parental Controls settings.

Afterward, flush your web browser caches and DNS resolver caches.

Web Browser Cache Flushing Instructions: http://www.opendns.com/support/article/327

Computer/Local DNS Resolver Cache Flush Instructions: http://www.opendns.com/support/article/209 (Restarting your computer is an alternative to flushing your local DNS resolver caches manually)

I'm going to try and see if that helps.