Windows 10 with Arduino IDE: no serial port name defined + port name corrupt

I upgraded to Windows 10 in the last week.

Before this, I had no issues addressing a COM port in the Arduino IDE. After the upgrade the IDE reports a 'no serial port name defined' whenever I select the Serial Monitor. In the COM port selection, as well as the status bar I see COM11 followed by 10 or more garbage characters.

I use Teensy 3.1 and LC's in my solution.

Any help that can be provided would be appreciated.

I found a solution. It is necessary to disable the compatibility mode Windows7

1 Like

Hi, I attempted different comparability mode settings, but unfortunately the result remains the same - please see the attachment.

Thanks!

Hello. It must be absolutely clean and run a check compatibility Arduino Ide as a program windows10

Hello. It must be absolutely clean and run a check compatibility Arduino Ide as a program windows10

Arduino IDE is working fine, COM ports are detected and named correctly, and can be used normally on both of my windows 10 systems (upgraded from 10 tech preview and win 8.1 with IDE installed)...

So this is not an issue effecting all windows 10 users...

Same problem.. I have Windows 10 and Arduino Ide 1.6.5 r5. The name com is corrupted.
When i change name serial from windows Arduino read name perfect, when i try download fw the name result corrupted and not download FW width error "com%%"!"%£!$%"£ NOT exist....

Width 1.6.6 Hourly Build 08/09/2015 same problem....

Try running the Arduino IDE in Windows 98/Me compatibility mode, this usually helps solve all the problems.

How to do this:

  • Right click your IDE icon.
  • Click properties
  • Select compatibility tab
  • Click on the drop list
  • select Windows 98/Me
  • go to your Arduino IDE
  • Specify your COM port

That should do it, or at least, this worked for me, and I hope it does for you too.

Kind regards,

Your windows is not in English so maybe there is some ascii/unicode issue?

Please follow this link it's work for me.

I had been working with Arduino UNO (COM3) and Leonardo (COM4) happily using WIN10 and Arduino 1.6.6until a few weeks ago. I took a gap in the activity then on trying it again yesterday found the same problem with the COM ports. The Arduino application displays the COM ports with additional non alphanumeric characters in string following the port number. Consequently the port does not connect to the boards.
WIN10 Home Ver. 1511 OS Build 10586.29 64 bit
DELL Inspiron Intel I3 with 4 GB RAM
Arduino UNO COM3 driver ver 1.2.2.0
Arduino Leonardo COM4 driver ver 1.2.2.0

I tried reinstalling the Arduino1.6.6, and the drivers without success in correcting - since there is no port name with garbage characters - lol. But it is rather annoying as I don't know how to fix it.

Any ideas please why this might be broken now and how to fix?
Thanks

****Looking at the latest Hourly Build update Release Notes there are a few items concerning the Serial Port. I tried downloading this but I am not sure how to install it.

I put the 1.6.5 Beta back in and it initially shows the COM ports properly. So 1.6.7 may fix it but I am not sure.
Can I get guidance on this please and pointer to info how to install hourly build if it fixes this.
Thanks

No wait, even though it looked OK initially, the 1.6.5 when I uploaded the program - it still had the same issue.

Here is first line of AVRDUDE.CONF referenced in errors

$Id: avrdude.conf.in 1236 2013-09-16 19:40:15Z joerg_wunsch $ -- text --

Here is upload error paste:

Arduino: 1.6.5 (Windows 8), Board: "Arduino Leonardo"

Sketch uses 7,296 bytes (25%) of program storage space. Maximum is 28,672 bytes.

Global variables use 717 bytes (28%) of dynamic memory, leaving 1,843 bytes for local variables. Maximum is 2,560 bytes.

PORTS {COM4ñ«Lï«?, } / {COM4càªèª&?f&h£KwP, } => {COM4càªèª&?f&h£KwP, }

Found upload port: COM4càªèª&?f&h£KwP

C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega32u4 -cavr109 -PCOM4càªèª&?f&h£KwP -b57600 -D -Uflash:w:C:\Users\NICHOL~1\AppData\Local\Temp\build700207152107275112.tmp/BrainSerialTest.cpp.hex:i

avrdude: Version 6.0.1, compiled on Apr 15 2015 at 19:59:58

Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

Copyright (c) 2007-2009 Joerg Wunsch

System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

Using Port : COM4càªèª&?f&h£KwP

Using Programmer : avr109

Overriding Baud Rate : 57600

avrdude: ser_open(): can't open device "\.\COM4càªèª&?f&h£KwP"Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

: The system cannot find the file specified.

avrdude: ser_send(): write error: sorry no info avail

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.

Thanks Diger67 and Prakash123. I did not think that would be an issue since I had not messed with it.
But
Looks like it likely was a problem with compatibility setting of Arduino program in Properties - was set to WIN 8.
Looks OK now there is no setting for compatibility.
Using 1.6.5 Will try 1.6.6. later
OW!

i am heaving that problem right now and i dont know what to do can someone help me.

i have port issue plz help me