The "most awesome launch night ever" has quickly turned into "the worst possible launch night of any game ever" with this. At least on other launch nights, I could install the damn installer
Here's some steps I found from a user on the MOP Beta forum. It's worth a try as they have the same issue with Agent.
STEP 1: open your internet explorer and do the following:
internet options > Connections > LAN Settings > uncheck "Automatically detect settings"
STEP 2: CTRL ALT DEL Kill any Agent*32/Launcher.exe
go to : C:\ProgramData\ and delete the Battle.net folder (THE WHOLE FOLDER)
Run the installer now. When it seems to hang:
Start Task Manager and end the Agent.exe process (not process tree). Then take a look at your updater. It should complete.
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