Oh and I'm using a USB Blue Yeti microphone with no additional softwear for the mic

I have the exact same issue, the mic was working for me before updating the game recently. I have tried all suggested fixes (plenty of people on Steam discussions with this same issue) and nothing has worked so far. My mic works in Windows, Steam and any other app that I use, other than DayZ. I have checked that it's selected as the default input device in Steam and Windows and tested and it works. The game simply doesnt register a microphone, when I check in microphone privicy settings in Windows it shows as last being used a few months ago when I last played DayZ. My security software also prompts me of any time an application is trying to access the mic and again shows the last time it was used by DayZ as a few months ago, the same time as Windows shows. I've also tried disabling this protection which didnt work.