Clear the block, step by step
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Reopen this address's own answer Open its site permissions from the small padlock icon, then Microphone; a reset option there wipes just this one site's answer.
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Look past this one address Any other site once told no for the microphone sits on the same roster, removable one by one from there.
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Match the right device The same list names a default microphone with room to switch, useful when two devices are plugged in at once.
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Try the mic on a phone too Android and iPhone keep their own copy of this setting, so a direct video call there needs its own Allow.
