Fixing XIVLauncher errors typically requires resolving antivirus interference, repairing broken game plugins, or addressing network connection blocks.
XIVLauncher is a popular custom launcher for Final Fantasy XIV, but it can encounter unique bugs due to how it injects code (like the Dalamud plugin framework) into the game. Below is a comprehensive guide to diagnosing and fixing the most common XIVLauncher issues. 🛡️ Antivirus Block and Installation Issues
Because XIVLauncher uses code injection to enable plugins, aggressive antivirus programs frequently flag it as a false positive, causing crashes or failed installations.
The Fix: Add an exception for XIVLauncher.exe in your antivirus software.
Never Run as Admin: Do not run the launcher as an Administrator. The developers state this breaks the installer and causes file access errors.
Fresh Install Clearout: If a broken update stops the app from launching, completely uninstall it. Wipe the leftover folders located in %localappdata%/XIVLauncher and %appdata%/XIVLauncher before reinstalling. 🧩 Game Crashes on Startup (Dalamud & Plugin Errors)
If XIVLauncher opens successfully but the game instantly crashes or displays an error code (like 0xC0000005) after you hit play, an outdated plugin is usually the culprit. This frequently happens right after an official FFXIV game patch.
The Fix: Temporarily disable third-party mods to isolate the issue.
Manual Reset: Navigate to your %appdata%/XIVLauncher directory.
Clear Folders: Move or delete the installedPlugins and devPlugins folders.
Safe Mode: Alternatively, hold the Shift key while clicking “Login” in XIVLauncher to boot the game into Dalamud’s Safe Mode, which disables all plugins. 🌐 “Unable to Complete Version Check” & Patching Errors
This error blocks the launcher from verifying if your game files are up to date. It can stem from an incorrect configuration setting or server-side communication blocks.
XIVLauncher Error #1017 – goatcorp/FFXIVQuickLauncher – GitHub
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