Hi! I didn't see any reports of this, so I figured I ought to report it: When I went to download the latest patch today, it got to the point where it was beginning the download, downloaded a very small amount of data, and then it stopped, bringing up a blank white dialog box on top of the launcher.
The dialog box is definitely associated with the launcher -- going to another app, then clicking where the dialog box title ought to be restores the Zenimax Online Studios Launcher menu bar. Further, you can drag the dialog box elsewhere from that title bar area.
But it does not respond in any other fashion. Clicking anywhere else in the dialog, pressing Return, or ESC or Cmd-Q has no effect, nor does clicking on the Launcher icon in the dock bring the Launcher forward. The Zenimax Online Studios Launcher menu bar items (Apple menu and the ZOS menus) are also unresponsive.
Right clicking on the Dock icon shows Application Not Responding, and I can Force Quit (the ONLY thing which works), but running the launcher again results in the same thing as soon as it tries to resume the download.
The only thing I can guess is that I was trying to do this from a Wifi hotspot, not from where I usually play the game - maybe this is related to the Access Denied issue? I'm going to try it again from home later this evening and see if that has a different effect. Whether it does or not, however, the launcher shouldn't be displaying a blank dialog for it's error. Definitely a bug of some kind.