programmer is not responding error message.

Development Tools IDE 1.x
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I'm on my Mac with an Arduino Uno Genuine. I selected the right port, board, everything. When I uploaded a blink to test, I got a programmer is not responding error message. Is this because I'm using a USB B 1.0 or might it be the CH340 driver I have installed?

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Thanks for your reply! I'm 100% sure I'm using the right port and board. I tried another usb cable, no luck. About the USB hub though, I'm using a usb C-usb A adapter. Could that be the problem? On a clone, the adapter makes no difference.

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I tried it on my PC, and no luck. It states that the COM port was denied, or that an error occurred, or the programmer is not responding. Could this be a problem with my Uno itself? The Uno itself, it's reset button doesn't work. Maybe it has a bad bootloader?

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