Avrdude: ser_open() error: The filename, directory name, or volume label syntax is incorrect

Using Arduino Avrdude, stk500, Bootloader issues
1

Hello,

I am using the Arduino IDE 2.2.1 and attempting to upload a sketch that I have previously uploaded and gotten to work, but I am getting this error:

avrdude: ser_open(): can't open device "\\.\COM7": The filename, directory name, or volume label syntax is incorrect.


Failed uploading: uploading error: exit status 1

This happened to me a couple days ago and I reinstalled Arduino IDE on my Windows machine, and it worked great again. Do you have any idea why I could be getting this error? Am I closing the program incorrectly or doing something else incorrectly?

Thank you very much for the help.

2

On IDE 2.x you MUST close Serial Monitor before uploading the new code to the board. If you forgot and it caused the error - restart the IDE, if it still fails - restart the computer.

3

Awesome, that worked. Thank you so much, I appreciate it!

1 Like
4

Please mark the topic as solved

5

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