IDE 1.6.9 Windows10 problems uploading code on DUE and Mega2560


since my son accidentally installed Windows10 onto my laptop HP EliteBook, I have problems uploading my code onto DUE and MEGA2560 boards (I have only those...)

I allways get "Port bussy" or "device not found" errors....

If I try the same with Windows7 and Windows XP on my other computers all work perfectly fine (same IDE Version, same code, same boards)!

Anybody else expiriencing this problem.

Thanks for your help and advice.

I just downloaded 1.6.9 nightly build. Lets see if that helps....

Best Regards

May need to update the usb driver and give the IDE admin privileges.

Thanks for your hints. Unfortunately both is allready done.
I figured out that the problem occurs also on my XP platform if I have to Arduino IDEs running at the same time. On windows 10 also if no other Arduino IDE is open... Seems to be an IDE issue :frowning:

The error meassage is:

Caused by: jssc.SerialPortException: Port name - COM5; Method name - openPort(); Exception type - Port busy.
at jssc.SerialPort.openPort(
... 7 more

A couple of things:
You can try the end of this thread
Read the beginning of it for the background.

Once you download and install the hourly build, test your Mega. The Mega is a standard board.

The Due - you will need to install the Due capabilities using Boards Manager. Search the Arduino site for "getting started using the Due" and you should be able to find what you need.