I get this occasionally on my Mazda 6 but usually on only one window at a time. A reset normally fixes it. Here's how.
1. Turn the ignition switch to the ON position.
2. Make sure that the power window ‘lock’ switch located on the driver's door is not depressed.
3. Press the switch mounted on one of the rear doors and fully open the window.
4. Pull up the switch to fully close the power window and continue holding the switch for about 2 seconds after the window is fully closed.
5. Repeat steps 3-4 for the other rear door and front passenger door switches.
They should now work normally.
Hope this helps.