Antivirus programs and firewalls can sometimes flag the "Preparing Game Data" process as suspicious because it involves a background agent downloading and moving files rapidly.
Try disabling your or third-party antivirus (like Avast or Norton) for 10 minutes.
The most frequent cause of this hang is a corrupted . Deleting it forces the Battle.net agent to reach out to the servers and rebuild the necessary bridge to your game data. starcraft ii preparing game data
completely. Ensure they aren't hiding in your System Tray. Press Windows Key + R , type %ProgramData% , and hit Enter. Locate the Blizzard Entertainment folder.
If the game starts immediately, you’ll need to add an for StarCraft II and Battle.net in your security settings. Summary Checklist Potential Cause Corrupt Cache Delete the Battle.net Cache folder in %ProgramData% . Permissions Run Battle.net as an Administrator. Broken Files Use the "Scan and Repair" tool in the app options. Network Block Temporarily disable firewall or VPN. Antivirus programs and firewalls can sometimes flag the
If the cache isn't the issue, one of your actual game files might be "shredded." Battle.net has a built-in mechanic to find and replace these.
Restart the Battle.net app and try launching the game again. 2. Run as Administrator Deleting it forces the Battle
Open the and navigate to the StarCraft II tab. Click the Options (gear icon) next to the Play button. Select Scan and Repair .