: The most frequent cause is a discrepancy between the language selected in the Battle.net launcher and the in-game settings. The game may be trying to download a localization pack (like German or Russian) that isn't fully installed.
StarCraft 2 is a masterpiece of engineering, but even masterpieces need a maintenance crew. Now, go build your supply depots. starcraft 2 preparing game data verified
StarCraft II "Preparing Game Data" (often followed by a slow download of 137MB or ~600MB), it is generally verifying game files or downloading missing localization data. While it is a normal background process, it can often get stuck or loop every time you launch the game due to language mismatches or corrupted cache files. Common Fixes for "Preparing Game Data" Loop Review — "StarCraft II: Preparing Game Data Verified"
We will proceed from simplest (least invasive) to most complex (last resort). Try these in order. New Patches: After a major patch, the game
If you are seeing this window every single time you launch the game, try these solutions in order:
: Delete the temporary Battle.net and Blizzard folders by typing %APPDATA% , %LOCALAPPDATA% , and %PROGRAMDATA% into your Windows search bar and removing any Battle.net or Blizzard folders found there.