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Hearthstone’s latest patch stops the game launching for some – here’s how to fix it


Hearthstone’s latest patch is a significant one, bringing a bunch of nerfs to Shaman and aggro decks, but the game is now bugged for many. If you’re struggling to launch Blizzard’s card game post-patch, luckily for you there’s this one weird trick to make it work. 

Since you’re here, why not peruse our list of the best Hearthstone decks for beginners

The bug in question sees the following error message appear on your screen: “Unable to load mono libraryfrom ‘C:/Hearthstone/Hearthstone_Data/Mono/mono.dll’ (error = 126).”

To fix, follow these four steps:

  • Open the Battle.Net launcher.
  • Go to the Hearthstone tab.
  • Click the ‘Options’ drowpdown menu beneath the game’s title.
  • Select ‘Scan and Repair’ from near the bottom.

The game should now launch like normal, congratulations.

Thanks, PCGamer.