Opening port com 3 error

running through setup for 30x48 spoilboard and got error opening port Com 3 message what is that help please ty

I assume your USB cable is connected to
your computer and Sienci’s controller; and that both devices are powered on? Have you restarted your computer ? Is this a windows computer?

it is windows with windows 11 i will also restart it and try it again

Bump. I am currently having this issue.
Was connected fine then… Out of the blue…poof.

Restarted already…same deal