Arduino – hangs when click tools.

“Launch4J” Error when trying to load Arduino0017


Arduino – hangs when click tools…



Disable Blue tooth

If using windows 7,  always run as administrator




On Windows, if the software is slow to start or crashes on launch, or the Tools menu is slow to open, you may need to disable Bluetooth serial ports or other networked COM ports in the Device Manager. The Arduino software scans all the serial (COM) ports on your computer when it starts and when you open the Tools menu, and these networked ports can sometimes cause large delays or crashes.