If the basic steps didn't work, it's time to bring out the heavy artillery. These solutions have been discovered by the community and are often very effective for stubborn cases.

: Sometimes the game cannot "finish" the preparation because it lacks permission to write to its own folder.

Yes, it's possible. Corrupted custom maps or mods in your Documents\StarCraft II folder could interfere with the game's initialization process. As a test, you can temporarily move the contents of this folder to another location on your desktop. Then, try launching the game. If the "Preparing Data" process completes quickly, you can then reintroduce your files one by one to find the culprit.

Add the path to your StarCraft II installation folder (usually found under Program Files (x86)/StarCraft II ). Preventive Measures

Windows may restrict the launcher from reading or writing data to your storage drives.

To ensure this issue does not return after you fix it, keep your software optimized:

Delete both folders. (Note: This will not delete your game installations, only temporary cache files). Restart the Battle.net launcher and run the game. 3. Clear the StarCraft II Variables File

Do not permanently disable your antivirus, but test this to identify the issue.

Do you notice any specific appearing after the progress bar hangs? I can provide more tailored steps based on your setup. Share public link

Ensure your security software isn't blocking StarCraft II . Add the following folders to your antivirus and firewall's exception list: