Why is Diablo III installer downloading the whole game again when I have already downloaded during my pre-order

Question

I'd pre-ordered Diablo III quite some time back and downloaded and ran the installer which then proceeded to download the full game.

However, today when I try to install Diablo III, it's redownloading the entire 8gb set of files. I've also downloaded the new installer, yet it proceeds to download the entire game.

What can I do to make the installer recognize that I've already downloaded the game?

Asked by Sathya

Answer

Blizzard had posted this post which mentions that the initial installers had a bug. The post mentions:

• Obtain the new Diablo III digital downloader using the links below

  • EU English Installer - Windows
  • EU English Installer - Mac
  • German Installer - Windows
  • German Installer - Mac

• Point the download save at the same directory as before. The folder in question is your main game data folder. If you have the game downloaded to D:\Games\Diablo-III-8370-enGB-Installer, please point the download to D:\Games\.

  Do not use the automatically generated folder containing the installation files (i.e. do not use the directory D:\Games\Diablo-III-8370-enGB-Installer as this is the one created by the downloader). If you chose the correct directory only 50MB will need to be downloaded to fix your install, otherwise you'll re-download the entire ~7.6GB

Also, it's absolutely imperative that you download the same language & region client that you used to download the game after pre-ordering.

In my case, I had downloaded the En-GB version of installer & game after pre-ordering. However, today while downloading the new installer, Blizzard offered me the US version of the installer & because of this mismatch, it was downloading the whole game again.

After grabbing the En-GB(aka EU) install client, it was able to detect my previous download.

Answered by Sathya

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