Failed to run required program (Agent)

Technical Support
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micutzu,

You have an EU Battle.net account and only play on the EU region. Please post your problem in the European Technical Support forum so they can assist.

http://eu.battle.net/d3/en/forum/4436696/
Just thought I'd post this in case it helps anyone.

T tried all the solutions here but nothing worked, I then started messing with IE, updating it to latest, changing the connection setting (no LAN) and it just started working, so something in IE/flash was blocking it previously.
Take your IE out of Work offline mode:
  • Open Internet Explorer, Press Alt + F and uncheck Work offline.


-
While at it (Still on IE), click on Tools > Internet options > Connections tab > and select Never dial a connection.

After changing that option to never dial a connection, click on LAN Settings and uncheck every single check box there.


this work for me

i set up a dial up connection and i got above error.

hope that help
nothing mentioned here works and I'm getting quite pi*sed after 5 hours of trying to fix the darn game without any results

FIX
YOUR
GAME
BLIZ
I tryed everything , but finally finded Barthus method . Now works ! Thanks for your posts !
It worked.. thanks.. its been a 3 days problem and solved..
Did the thing with IE and it worked. I don't even use Internet Explorer, why on Earth does it have anything to do with the Diablo 3 installer/update agent?

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