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My desktop & andriod phone Firefox will connect to website but my laptop firefox will not connect because "connection is not secure" and laptop clock is correct

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Why can I get access to a website with my desktop and android phone Firefox but not with my laptop Firefox. Both the desktop and laptop are using version 52 ESR Firefox. I also made sure the laptop clock was correct.

Why can I get access to a website with my desktop and android phone Firefox but not with my laptop Firefox. Both the desktop and laptop are using version 52 ESR Firefox. I also made sure the laptop clock was correct.

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Which error message do you get?

Any more details you could provide would be helpful.