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How to Fix “League of Legends failed to launch” Error

Are you getting a “League of Legends failed to launch” error when launching LoL?

Here’s the second part of the error, “Something unusual happened while trying to launch League of Legends”.

Followed by “Try closing an restarting” and an “Okay” button.

And, “If the problem persists, contact our player support team”.

In this quick and easy guide, you’ll learn how to fix the “League of Legends failed to launch” Error (LoL).

How to Fix “League of Legends failed to launch” Error

Here’s how to fix “League of Legends failed to launch”:

  1. Close the League of Legends app.
  2. Click on the arrow icon to show hidden icons on the bottom navigation bar.
  3. Right-click the “Riot Games” icon and select “Exit”.
  4. Search for “regedit” using Windows Search and open it.
  6. Windows NT > CurrentVersion > Image File Execution Options.
  7. Right-click “DevOverrideEnable” and select “Modify”.
    • (Optional) If you don’t have “DevOverrideEnable”, select “Image File Execution Options” and right-click an empty spot.
    • (Optional) New > DWORD (32bit) Value > Rename it to “DevOverrideEnable”.
  8. Set the “Value data” to 0 and select “OK” and restart your PC.

Further reading

How to Fix “Your game requires a system restart to play” in League of Legends

How to Fix “Sorry we’ve detected a problem with your installation” in League of Legends

How to Download Friday Night Funkin (FNF)


About the author

Lim How Wei

Lim How Wei is the founder of followchain.org, with 8+ years of experience in Social Media Marketing and 4+ years of experience as an active investor in stocks and cryptocurrencies. He has researched, tested, and written thousands of articles ranging from social media platforms to messaging apps.

Lim has been quoted and referenced by major publications and media companies like WikiHow, Fast Company, HuffPost, Vice, New York Post, The Conversation, and many others. One of his articles about the gig economy was quoted by Joe Rogan who hosts The Joe Rogan Experience (arguably the most popular podcast in the world), in the This Past Weekend podcast by Theo Von.

In his free time, Lim plays multiple games like Genshin Impact, League of Legends, Counter-Strike, Hearthstone, RuneScape, and many others. He creates guides, walkthroughs, solutions, and more on games that he plays to help other players with their progression.