I upgraded to Windows 8.1 which included IE 11 and now I am not able to playback Scottrade or TDA WebEx sessions. Their Scottrade tech support indicates that they do not support 8.1 or IE 11. I have tried adjusting IE 11 browser settings but WebEx still dies once the play button is pressed. I have another Windows 8 system which I didn't upgrade to 8.1, and WebEx continues to run fine on that machine. I have tried the other popular browsers, but WebEx still will not successfully run once the play button is pressed.