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Suddenly Firefox not working

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  • Last reply by mail2080

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I'm on a Mac running Monterey 12.7.4. I've been using Firefox for years with no issues. All of a sudden Firefox can't load any websites. Message: "We can’t connect to the server at www.XXX.ca." But Safari loads all websites with no problems. I can't figure this out.

I'm on a Mac running Monterey 12.7.4. I've been using Firefox for years with no issues. All of a sudden Firefox can't load any websites. Message: "We can’t connect to the server at www.XXX.ca." But Safari loads all websites with no problems. I can't figure this out.
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Try changing DNS over HTTPS (DoH) to "Off" or "Max Protection" and in Connection Settings change "Use system proxy settings" to "No proxy".

Does it still happen in Troubleshoot Mode?

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Tried that but does not solve the problem.