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Hearthstone’s popularity is well deserved. Blizzard made the right move with this game, even though it was primarily just an experiment. Nowadays, this collectible card game gathers more than 60 million players. And the numbers are growing on a daily basis.

The game’s simplistic graphics and low requirements are the valid reasons for its popularity. Nevertheless, even the best-optimized games can have an issue or two. One of those rare but critical issues is API loading error. In this article, we’ll try to address this problem.

How to repair loading errors in Hearthstone

Solution 1 – Try out other servers

On some occasions, your native server can be the reason for this issue. Therefore, you should try and switch the realm in order to troubleshoot it. If you are still prompted with an error, move on to the next solution.

Solution 2 – Update GPU drivers and redistributables

You should at any time have the latest drivers. Additionally, it seems that DirectX and Visual C can inflict a lot of errors. Therefore, updating them will make the problem easier to troubleshoot.

Windows will usually provide you with the latest iteration of GPU drivers, but they won’t work all the time. What you need to do is get the latest drivers from the OEM’s official website and install them. Also, another option is to try and roll back drivers to an older version. Windows Update tends to fix what’s not broken frequently, so a previous version of GPU drivers might work better.

Here’s where you can find Nvidia and ATI/AMD drivers.

Otherwise, you should update your GPU drivers with specialized help from a dedicated tool. You can thus manage all your drivers automatically using DriverFix.

Solution 3 – Run the game in the compatibility mode

Compatibility mode will let your system adapt the game to an older version. Moreover, many users had a problem after upgrading to Windows 10. Rather than downgrading your system, try this out:

Check the ‘Run this program in compatibility mode for’ box.

Solution 4 – Repair the game using Battle.net client

Expert Tip: Some PC issues are hard to tackle, especially when it comes to corrupted repositories or missing Windows files. If you are having troubles fixing an error, your system may be partially broken. We recommend installing Restoro, a tool that will scan your machine and identify what the fault is.
Click here to download and start repairing.

Battle.net desktop app has a built-in repair tool for incomplete or corrupted game files. It is worth trying out in this on similar occasions. You can use Scan & Repair tool this way:

If the problem proves is not related to game installation, clearing cache is the next obvious step.

Solution 5 – Delete Battle.net cache folder in Program Data

Cache files can get corrupted, too. While this doesn’t happen too often, it mostly happens after an update. As a result, your game can have numerous issues. You can delete the game cache this way:

Open Battle.net folder.

Solution 6 – Perform a clean reinstall of Hearthstone

If the previous solution proved insufficient, reinstallation is the next viable solution. Furthermore, there is a possibility that the game system integration is the main reason for loading failure. You can reinstall the game in a few easy steps. In addition, we want the clean install, so you’ll have to use any registry cleaner and delete the installation folder manually.

Solution 7 – Use Windows File Checker tool

All of the previous steps are basically oriented on game issues. But, on some occasions due to corrupted system files, the game can suffer various problems. Therefore, you should download the Windows File Checker and look out for faulty files. You can run the mentioned tool this way:

Open Start and in the Run type CMD.

Solution 8 – Tweak Kernel32

The good folks of the Blizzard community suggested an additional workaround. We find it a bit risky since it involves tweaking Windows Kernel files. And we all know that can, in the worst scenario, result in a complete system crash. However, we will walk you through the process, step by step, and show you how to do it.

Move or rename MemModule32.dll from Plugins.

Please note that you may need administrative permission in order to do these steps.

We hope that the suggested workarounds will let you play Hearthstone again. If you have related issues or any suggestions or concerns, please tell us in the comments.

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