League of Legends Fix Cover

League of Legends Failed to Launch

X League of Legends failed to launch
Something unusual happened while trying to launch League of Legends. Try closing and restarting. If the problem persists, contact our player support team.
Okay S Dirit rea

✅ How to Fix

  1. Press Win + R, type regedit, and press Enter.
  2. Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
  3. Find or create DevOverrideEnable (DWORD, 32-bit), set its value to 0.
  4. Close the Registry Editor and restart your PC.
  5. Try launching League of Legends again.

💡 Why This Works

Riot Vanguard checks for debug override flags like DevOverrideEnable. If set to 1, it assumes your system is tampered with and blocks launch. Set it to 0 to restore normal behavior.

这是我无意中发现的解决方法，我自己也被这个问题困扰了差不多半年，所以决定写下来分享给你。

很多人可能和我一样，曾经装过一些系统优化工具、破解版软件（如 Office 激活工具、Adobe 破解包等），它们可能在后台偷偷设置了 DevOverrideEnable = 1，导致 League of Legends 无法启动，且系统不会主动提醒你。

这个问题很愚蠢，但解决方法其实很简单。如果你也因此受苦，希望这个页面对你有帮助 🙏