Secure Connection Failed Bing
So this is happening to me recently, both on Firefox mobile and desktop (screenshot provided is from desktop). It happened to my dad sometimes so I know it's a firefox issue. This error pops up when I search for something whether from the address bar or the small toolbar on the right.
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hi, unfortunately MS has misconfigured a security feature (OCSP stapling) on their servers which got now cached in your local firefox installation.
in order to resolve that, please enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named security.ssl.enable_ocsp_stapling. double-click it and change its value to false - this will degrade a security feature in firefox, so please revisit it in a couple of days again after microsoft has fixed their stuff and turn it back on again then...
Thank you. And apologies for making a duplicate (I did not know the original was posted).