I have a 1996 ford explorer xlt and none of my windows are working from any of the switches. Is there a main relay?

replace switch on drivers door.

I had the same problem, the fix is, there is a relay under the dash, by the steering column (the largest one) replace it and Wal-la it's fixed

I had the same problem, replace the relay under the dash by the steering column (the biggest one). problem solved.

all my power windows work from the drivers door master switch but not from their own individual switches

I experienced the same problem , I changed fuses & discovered that there was a loose /split wire on the harness located in the driver door leading to main window control. Fixed wire and all windows are working again. This issue is common loosing function of power windows due to the wires positioned inside driver door & constant opening & closing door over a period of time bends and splits these wires. Hope this helps