I used to use platformio with VScode on my W10 desktop until last year and I did not have any problems with uploading. Today I wanted to start a new project and after starting VScode it installed it’s latest updates. Now I find that I cannot upload a sketch anymore. I always get the titled messag…

Thanks for pointing me in the right direction. I exchanged my pro mini with an arduino nano and I can upload. Thus, it seems that the USB/serial adapter which is required for the pro mini creates the problem It still puzzles me though that the arduino ide has no problems talking to the usb device…

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Avrdude: ser_open(): can't open device "\\.\COM5": Access is denied

maxgerhardt February 16, 2022, 7:36pm 4

I’ve seen this problem pop up a few times now here in the forum, but I’m never able to reproduce it. Does the procedure at ESP32 & could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5) - #13 by yvesdelbrassine help?