Serial port 'COM3' already in use

rickztahone · Post by **rickztahone** » Sat Jul 30, 2016 6:54 pm

Hello all. I have gotten down how to upload code to my RA. However, I was uploading some code from the wizard and it did not finish loading after over 10 minutes. I figured something had gone wrong and I hit the "quit" option in the
Arduino menu. I tried uploading it again a few minutes later after having powered down and I get a:

"serial port 'COM3' already in use. Try quitting any programs that may be using it"

How do I fix this? Everything had been working fine before this. How do I quit from another program when the only place I am running it is from the Arduino screen? I have been using COM3 all along as well so that can't be it.

rimai · Post by **rimai** » Sat Jul 30, 2016 11:02 pm

Did you try rebooting your computer?

rickztahone · Post by **rickztahone** » Sat Jul 30, 2016 11:26 pm

Thanks Roberto. Reboot worked

cosmith71 · Post by **cosmith71** » Sun Jul 31, 2016 6:41 am

FYI, I get this kind of error occasionally. If it let it sit for a few seconds and try again it usually works.

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