Close Battle.net and ensure no Blizzard processes are running in Task Manager.
Change the to English (US) if it is set to something else, or vice-versa. starcraft 2 preparing game data
The "StarCraft 2: Preparing Game Data" screen is a common roadblock that occurs when the game client attempts to synchronize assets or download missing language files immediately after you hit "Play" in Battle.net. For most, it is a brief step; for others, it becomes a loop that downloads roughly 600MB at extremely slow speeds every single launch. Common Causes for the "Preparing Game Data" Loop Close Battle
A known legacy issue with the Blizzard downloader involves Windows' LAN settings. Search for "Internet Options" in your Windows Start menu. Go to the tab and click LAN settings . For most, it is a brief step; for
If the launcher is the bottleneck, you can bypass the "Preparing Game Data" screen entirely by launching the game directly from its installation folder.
Let the game download the small update, launch it, then close it and switch back to your preferred language. 2. Bypass Battle.net with SC2Switcher
Uncheck and click OK. This has been reported to instantly boost "Preparing Game Data" download speeds from KBs to MBs. Comparison of Solution Success Rates Estimated Success Language Toggle Persistent 600MB download loops SC2Switcher Bypassing launcher bugs entirely Cache Clear General launch failures or 0 B/s stalls OneDrive Unsync Stalls during the "Preparing" phase