All 3 computers are running Windows 10 Pro. Two are Version 2004, build 19041.804. One is Version 1909, 18363.1198.

One of the Version 2004 computers is working, but it took several tries before it would work. The standard serial device driver is quite old. This board probably needs a new driver.

So, are the GPIO on the QuickFeather 5V tolerant? If I connect USB on the Huzzah, there will be 5V (VBUS) on IO32 of the QuickFeather. Also, because the VBAT pins are connected together the 3.3V regulators will both be on unless IO27 on the QuickFeather is programmed to disable the regulator on the ...

I am following this example: https://github.com/sensiml/esp32_simple_http_uart which shows stacking the QuickFeather on top of the Huzzah ESP32 Feather board. I'm concerned that this shorts the 3.3V regulators together. I asked on the Adafruit forum and the response was that you cannot stack Feather...

Has anyone figured out how to fix this?

I have only been able to get the Serial port to work on one of three Win10 Pro computers. And that took me several tries before it worked.

The port always shows up, but it fails to start.