Looking through the past cases - I`ve noticed couple of players had their anti-virus program (in some cases default windows anti-virus) disable Updater.exe - try to temporary disable the anti-virus.
Maybe try to also temporary disable default Windows Firewall.
Also - can you please confirm - did you dowload Installer file from our Massively mirror or from our dofgame.com link?
And sorry - I`m leaving the office now
but we can continue this tomorrow.