Firefox rejects google as a 'your connection is not safe?

Since upgrading to firefox 50.0.1, I can't do a search with Google (or any other engine) search. I get "your connection is not safe." Everything works with Chrome and Safari. I have a MACBook Pro OSX 10.12.1 with no antivirus. Firefox is configured to ignore IVP6 and I don't have a proxy. I can't even run the 'SSL Labs test page' as has been suggested by Mozilla Help pages. What is going on? Which does not prevent searches. I can browse the other pages without problem. Thanks for any help.

Hi robsj, the issuer of the certificate is listed as "Personal Adguard CA". So I assume you are using Adguard. Try:

https://KB.adguard.com/index.php?/Knowledgebase/article/view/21/0/the-connection-is-not-trusted

A little luck?

Tags: Firefox

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