I was playing the game an hour ago. I logged out and exited the client to go have some lunch. I came back and am now getting the above error after clicking Play in the launcher. Same thing happens whether I run Diablo III.exe or Diable III Launcher.exe
The PC was not shutdown and did not sleep or hibernate.
No other software was running or was run while the client was exited.
No updates happened to Windows or my Anti-Virus.
I always run the executables as administrator.
What happened in the last hour? Agent.exe is currently running and I'm guessing was running the whole time the client was shut down. I've killed it and tried again, no difference.