Nano every upload com port problem

Development Tools Uploading
1

I can't get a sketch uploaded to a nano every from my Windows 10 computer. I uploaded a sketch yesterday, but now get an error. The error message is below.

Arduino: 1.8.13 (Windows 10), Board: "Arduino Nano Every, None (ATMEGA4809)"

Sketch uses 20954 bytes (42%) of program storage space. Maximum is 49152 bytes.

Global variables use 780 bytes (12%) of dynamic memory, leaving 5364 bytes for local variables. Maximum is 6144 bytes.

avrdude: ser_open(): can't open device "\.\COM3": The system cannot find the file specified.

The tools port info says the board is on com4 as does the windows device manager. I have restarted the IDE with the board connected, and connected the board after starting the IDE. Also, I have rebooted the computer with and without the board connected. Nothing has been added to the computer or changed with the nano since yesterday. It seems there is a com port non-recognition issue.

Anyone have ideas?

Thanks

Bob

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

2

Windows has a "way" of changing port numbers; one day COM3 and maybe COM4 another day.

Back in my Win 7, 8, 8.1 days I had to do something similar to what the article suggests. But Win-10 and Win-11 have been more stable for me.

https://theitbros.com/how-to-delete-com-ports-in-use/

3

Thanks - I'll give it a try. I needed to delete the in use port, but had no idea what that meant.

4

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