: If the game hangs after "Preparing Data," switching your region in the launcher (e.g., from Europe to Americas) can force a re-synchronization of account data. Launch the game in the new region once, then switch back to your original region.
Change the to English (or your preferred native language). Launch the game. starcraft 2 preparing game data link
Some players have resolved the issue by editing a game configuration file. : If the game hangs after "Preparing Data,"