Fix: Hearthstone unable to start on PC

Ivan Jenic By: Ivan Jenic
3 minute read

Home » Fix » Fix: Hearthstone unable to start on PC

Since the collectible cards genre gained a great popularity bust over the years, all the world needed is a massive online game. So, Blizzard took the opportunity and created Hearthstone: Heroes of Warcraft. Based on the well-established Warcraft universe, the game became an instant hit worldwide.

Hearthstone is not a demanding game. So, system requirements usually aren’t the problem, but there are some other issues that can bother players. Nevertheless, some users recently reported an annoying flaw. The game simply won’t start. For that matter, we’ve prepared some solutions for you.

How to fix ”Game won’t start” issue in Hearthstone

Disable or uninstall known conflicting programs

Some programs and their background processes are known for interfering with Hearthstone. Therefore, they can create a whole variety of issues. We are listing some of them here:

  • Norton, Kaspersky and Panda Antivirus solutions.
  • Torrent clients and download managers.
  • GPU tuning applications.
  • VoIP services.
  • Peer 2 Peer software.

The easiest way to resolve this issue is uninstalling these programs. On the other hand, you can just disable them while playing Hearthstone.

Update Hearthstone

You should always have the latest patch/update installed. The client will automatically update Hearthstone to the latest version, so that shouldn’t be a problem. Sadly, on some occasions, you’ll have to patch the game manually. You can do that by following these instructions:

  1. Download the Agent standalone patch files.
  2. Close any running Blizzard games and launchers (including the App), and wait at least 30 seconds.
  3. Right-click the Taskbar and bring up your Task Manager
  4. Under Processes, check for Agent.exe. If it is active, stop it.
  5. Extract the standalone patch files to the following location C:\Program Data\ You should enable Hidden files and folders to see this.
  6. Confirm that you want to merge and replace the files.
  7. Start the App or game launcher again and try to patch normally.

Update GPU drivers

Updating your drivers is the main thing for every game. And Hearthstone is not an exception. Be sure that you grab your drivers from official sites.

If you have a nVidia GPU go here.

If you have an AMD/ATI GPU go here.

If you want to update your drivers from the Device Manager, check out this article.

Log into a different region

Changing your region can be very helpful for various issues. Don’t worry, it’s not a permanent change. After a few games in another region, you can comfortably get back home. You can easily change your region it the app in Hearthstone tab.

Change compatibility mode

Some users reported that changing compatibility mode helped them resolve similar issues. So you should give it a try. This process isn’t hard at all, and we’ll lead you trough it:

  1. Go to installation folder. The default location is C:\Program Files\Hearthstone.
  2. Right-click Hearthstone application and open Properties.
  3. In Compatibility tab check Run this program in compatibility mode for.
  4. If you are running Windows 10, you should select Windows 8. So, basically, downgrade for earlier system version.
  5. Check Run as administrator box, too.
  6. Save configuration and start the game.

Scan and repair the game installation

Sometimes the game files get corrupted or incomplete. Is it because of bugs, malware, or other malicious software. Now, imagine that you have to reinstall the game every time that happens. Thanks to an implemented tool, lets you scan and repair those files. To do so, follow these instructions:

  1. Open your desktop client.
  2. Click on the Hearthstone tab.
  3. Open Options and choose Scan and Repair.
  4. The process will last for a couple of minutes.
  5. Once it finishes, you can try starting the game.

That’s about it. We hope you’ll find these solutions helpful and finally resolve problems related to failed startup.

Do you have any additional solutions? If you do, please share them with us in the comments section.



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