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why is stupid firefox blocking sites i always use

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a site that i always go on and use is now not coming up since stupid firefox updated on my pc and phone. it now tells me it is not a secure connection.

a site that i always go on and use is now not coming up since stupid firefox updated on my pc and phone. it now tells me it is not a secure connection.

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When you get the page mentioned in the following article, there's usually an "Advanced" button you can use to obtain more technical details on the problem. Could you click that and paste the information from that area into a reply? In particular, there's usually a SEC_ERROR code. Thanks.

What do the security warning codes mean?