Code will not upload!

Development Tools IDE 1.x
1

Arduino: 1.6.3 (Windows 8), Board: "Arduino Uno"

Sketch uses 1,326 bytes (4%) of program storage space. Maximum is 32,256 bytes.

Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.

avrdude: ser_open(): can't open device "\.\COM1": The system cannot find the file specified.

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

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

Those were the error messages that displayed when I attempted to upload code onto my Arduino Uno Rev3

2

Have you ever been able to upload?
Are you sure the UNO is assigned to com1?
Does loop aback testing work OK?
Is your board set to UNO?
What do the leds do?
What type of computer do you have?

3

Hi! Just fixed the same problem but mine was with //.//COM5. With your Uno plugged in, on your PC go into Control Panel/Systems/Hardware/Device Manager and check in Ports that you can see the appropriate COM port you are expecting. In my case I had the yellow ! error flag, so I let Windows do an update search and, on my PC, it came up with COM6. I then went into Arduino IDE and was able to select COM6 in the Tools/Ports line, and this than let me upload a Blink program correctly. Hope this helps!