If files are missing or damaged, the launcher will continuously try to "prepare" them. In the Battle.net app, select StarCraft II. Click the next to the Play button. Select Scan and Repair and click Begin Scan .

DNS issues or ISPs blocking game data transfer. How to Fix "Preparing Game Data" Stuck (Solutions)

Depending on your region and language layout, select one of the community-verified fixes below to bypass or permanently repair the download loop. Method 1: The Dual-Language Pack Solution

If the above fails, the launcher might be trying to stream a language file you used in the past.

Ensure and Spoken Language both match your native region (e.g., English - US). Click Done and restart the app. 2. Run Scan and Repair

: You can bypass the Battle.net "download of doom" by launching the game directly from its installation folder.

The replay file itself is small because it does contain the core game data (like unit stats, ability data, or visual assets). Instead, it contains a list of dependencies , such as Core.SC2Mod or Map.SC2Map .

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If the process is stuck or repeats every time you launch the game, try these specific solutions:

The initial patch or update did not install correctly.

If you are seeing a recurring 605MB download, this is often caused by a language mismatch between your OS and your game setting. Open the . Select StarCraft II . Click the Gear Icon next to the Play button. Select Game Settings .

Instead of utilizing your full internet bandwidth, the game downloads these missing files through an internal stream link capped at very low speeds (100–500 KB/s).

If the previous steps fail, the underlying Battle.net Update Agent software may be corrupted beyond a simple cache clear.