Hi all. I'm new to this forum only because I also suddenly had my third monitor stop working and had no clue why. Checked and removed/reconnected all connections between MAC laptop and 2 monitors, reinstalled updated DisplayLink and followed ALL the steps it indicated to make sure the icon is in menu bar, screen recording on, etc. After an hour of all that and trying to get answers via these forums, I did the old school thing... unplugged EVERYTHING from the wall outlet, power strips, you name it! Plugged it all back in and now third monitor is up and running. NO CLUE why it came to that, but thought I'd pass along the tip in case it helps others. Will have to see if once it all goes to sleep as I walk away tonight, if all monitors will work tomorrow.
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