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    did you try to change the Processor option in Tools menu? Commented Jul 8, 2023 at 15:58
  • @Juraj Yes, I did. I beleive it may have something to do with recent Windows updates, but im not sure. Commented Jul 8, 2023 at 16:20
  • some other program may have possession of COM15 Commented Jul 8, 2023 at 17:19
  • @jsotola I dont think so. It switches ports every now and then, and none of them work. i can upload to any other type Arduino. Doesn't matter the port. Commented Jul 8, 2023 at 17:29
  • then the Nano has failed in some way ... check for foreign objects inside the USB connector and on the surface of the board ... also try a different cable Commented Jul 8, 2023 at 17:32