Serial port COM11 is not found!

Hi everybody!

I am working on Arduino Uno project that controlling 2 servos, I don’t have any problem with the project itself because I have tried it many times and add updates on it.
Suddenly, “Serial port COM11 not found” message appear to me!! :fearful: :frowning: :frowning: , I have tried many solutions as I read from this forum to fix this problem, such as restarting the PC, try to re install the driver, go to devices manager and delete the Arduino Uno Com11 and add it again, but still the problem is not solved. :disappointed_relieved: =( =(
Please I need your help as soon as possible because currently I’m working on an important project. :slight_smile: :slight_smile:

I have tried many solutions as I read from this forum to fix this problem, such as restarting the PC, try to re install the driver, go to devices manager and delete the Arduino Uno Com11 and add it again, but still the problem is not solved. smiley-sad-blue smiley-cry smiley-cry Please I need your help as soon as possible because currently I'm working on an important project. smiley smiley

If you have tried all these suggestions already but they didnt work then have you tried to do something with the ATmega8u2 or 16u2? I mean reading the fuses etc or trying to connect a ISP to it?

just a silly question: are you sure, that your arduino is plugged on com11?!?

just a silly question: are you sure, that your arduino is plugged on com11?!?

Yes because he's able to see Arduino correctly written before COM11 port in device manager.

go to devices manager and delete the Arduino Uno Com11

NI$HANT:

If you have tried all these suggestions already but they didnt work then have you tried to do something with the ATmega8u2 or 16u2? I mean reading the fuses etc or trying to connect a ISP to it?

Hi; Thanks for your response :) and sorry for being late in reply, but I was busy with other projects and assignments. What do u mean by ATmega8u2 and 16u2?? could u explain to me what are these??

jn-wp:
just a silly question: are you sure, that your arduino is plugged on com11?!?

Thanks for your response :), NI$HANT answered you.

The 8u2 or 16u2 on mega and some custom uno are the serial converter uCs replacing the Ft232rl serial converter chip unlike 232 rl the 8u2 and 16u2 are uCs programme to do the Ft232rl work and they have protruding icsp headers which can be connected to reprogramme them, but I think as you dont even know about them then you won't have messed up with them.

But maybe your computer have assigned other com port to your arduino , it shouldn't be that complex of a problem.