This situation has gone on for a few days now, with no improvement. I usually use gamepad to play the game on PC, however, after update 18, my gamepad will randomly cease to be recognized by ESO, and ONLY ESO. For instance, I can close ESO after this happens, and without changing anything, launch another steam game, (Dark Souls) and the controller works fine. I close the other game, and relaunch ESO, and the controller still is not recognized by ESO.
The only workaround I have right now, is I can unplug the controller, close ESO, plug the controller in, then relaunch ESO. However, this is clearly far from ideal, as the issue occurs randomly and without warning. I'm just lucky it hasn't occurred during a boss fight, though I have had to deal with it during a few dungeon runs.
Things I have tried (that have not worked) :
Reinstalling the controller drivers.
Toggling Gamepad Mode On/Off
Unplugging, then plugging the controller back in, while ESO is running
Pressing every button on the controller to try and convince it to talk to ESO again.
Letting it sit and wait for a few minutes.
Praying to Vivec.
Praying to Nocturnal.
Praying to Stendarr.
I should note that when I attempted to pray to Molag Bal my wife slapped me and told me to just post in the Forums already.