Look at your Windows taskbar tray and click the (the blue or white cloud).
Completely close the Battle.net launcher. Check your Windows System Tray (bottom right corner) to ensure it is fully shut down.
To help narrow down the cause if the issue persists, could you tell me:
During preparation, the game extracts the pathing map (a grid of walkable/unwalkable cells at 0.25 tile resolution) and builds a spatial index for collision detection. starcraft 2 preparing game data
The Final Boss: A Review of the "Preparing Game Data" Loading Screen
Modern operating systems and antivirus programs are highly sensitive to applications modifying data in the background. If Windows or a third-party antivirus restricts StarCraft II from reading or writing to your hard drive, the "Preparing Game Data" screen will freeze indefinitely. Run as Administrator Right-click the on your desktop. Select Properties , then navigate to the Compatibility tab.
Note: Deleting these folders will not delete your game progress or installations; it simply forces the launcher to rebuild its temporary index. Step 2: Use the Battle.net Scan and Repair Tool Look at your Windows taskbar tray and click
This process can take anywhere from 5 to 20 minutes depending on whether you have the game installed on a solid-state drive (SSD) or a traditional hard drive (HDD). Step 4: Configure Antivirus and Firewall Exceptions
Interestingly, StarCraft II does not allow chat during data preparation. This was a deliberate design choice: the system is single-threaded for determinism, and network I/O is reserved for synchronization handshakes, not voice or text packets.
Click on , then select Manage settings . To help narrow down the cause if the
Do you notice any specific appearing after the progress bar hangs? I can provide more tailored steps based on your setup. Share public link
: This is the most successful community fix. Ensure your game language and the Battle.net launcher language are identical.
One player has a modified map file (even accidentally, due to disk corruption). The checksum fails, and the match aborts. This is why ladder forces a map re-download if verification fails.
StarCraft II records every match automatically. The replay file is not a video — it’s a sequence of input commands and initial state seeds. Before the match starts: