VS Arduino - Serial port not found

Jun 17^th, 2026 at 2:30pm (UTC)

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Serial port not found (Read 152 times)

557Torino Junior Member Offline Posts: 12 Joined: Aug 30^th, 2018	Serial port not found Jun 2^nd, 2026 at 8:39pm	Print Post
	When loading a new sketch the serial monitor shows the following: Opening port Serial port not found debug off port failed to open. This started to happen recently. I have tried adding delays before and after the serial.begin line, but to no avail. This does not happen with the Arduino IDE. If the connect button is clicked on the serial monitor the sketch will start outputting to the serial monitor, but any initial outputs from the setup will be lost. Anybody else have this problem?


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Simon@Visual Micro Administrator Offline Posts: 2928 Joined: Feb 13^th, 2019	Re: Serial port not found Reply #1 - Jun 8^th, 2026 at 2:58pm	Print Post
	Thanks for the report. Can you attach the verbose build and upload log from Output > Micro Build, with the below options enabled? vMicro > Compiler > Verbose vMicro > Compiler > Show Build Propertie vMicro > Uploader > Verbose This should give us more to investigate as to why the same serial monitor tool as in the Arduino IDE cannot connect to the port after upload.


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