: Some users report that Microsoft OneDrive syncing the Documents folder interferes with SC2 data, causing the loop. Blizzard Forums Are you currently stuck on this screen , or are you looking for a more technical breakdown of why it happens? Preparing game data - Technical Support - SC2 Forums

Before reinstalling the entire game, use the built-in repair utility to identify and fix corrupted files.

CREATE TABLE kill_matrix ( killer_event_id BIGINT REFERENCES unit_events, victim_event_id BIGINT REFERENCES unit_events, game_id TEXT );

If you find yourself stuck or experiencing this window every time you launch, try the following community-verified solutions:

The most common cause for this error is a mismatch between the language set in the Battle.net Desktop App and the actual downloaded game data.

Close the Battle.net app and all Blizzard processes in the Task Manager. Windows Key + R %ProgramData% , and delete the Blizzard Entertainment Battle.net Repeat this for %LOCALAPPDATA% Empty your Recycle Bin and restart the launcher. 3. Check Windows Permissions and Security