avrdude stk500_getsync (): not in sync: resp=0x00 for UNO R3

Development Tools IDE 1.x
1

the board suddenly show this message (avrdude stk500_getsync (): not in sync: resp=0x00) when upload any program !!!

2

Do you have the right port selected?

for me it vanished after unplugging plugging back the usb and resetting the board.