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Cannot undo effects after uninstalling unapproved Parental Control add-on

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andrew_ghattas
andrew_ghattas
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After testing out an unapproved Parental Control add-on for Firefox, I decided to uninstalled it. But Firefox still redirects webpages (depending if it contains certain keywords on the page) to a blank page as if that add-on were still installed. Other web browsers are not affected.

Where on my computer is Firefox getting these instructions (including that custom list of key words)? And how do I undo this?

After testing out an unapproved Parental Control add-on for Firefox, I decided to uninstalled it. But Firefox still redirects webpages (depending if it contains certain keywords on the page) to a blank page as if that add-on were still installed. Other web browsers are not affected. Where on my computer is Firefox getting these instructions (including that custom list of key words)? And how do I undo this?