Wuthering Waves has quickly become a favorite among action RPG fans, but nothing kills the excitement faster than a sudden crash. One of the most frustrating issues players encounter is the dreaded Fatal Error Line 677. If you’ve run into this message and found yourself staring at your desktop instead of the game, don’t worry—you’re not alone, and more importantly, you can fix it.

TLDR: Wuthering Waves Fatal Error Line 677 is usually caused by corrupted game files, outdated drivers, missing system components, or system instability. Start by verifying your game files and updating your graphics drivers. If that doesn’t work, reinstall Visual C++ redistributables, check for Windows updates, and disable background overlays. In rare cases, a full reinstall or hardware check may be necessary.

What Is Wuthering Waves Fatal Error Line 677?

Fatal Error Line 677 is typically associated with the game engine encountering a critical problem it cannot recover from. In most cases, this means:

  • Corrupted or missing game files
  • Driver incompatibility
  • Outdated system components
  • Memory access issues
  • Conflicts with third-party software

The error often appears as a crash window referencing a specific file path and “Line 677,” indicating where the engine failed during execution.

Understanding the root cause is key. Rather than being one single issue, Line 677 is more of a symptom—your system is telling you something deeper is wrong.

1. Verify Game Files First

This should always be your first move. Corrupted or incomplete installations are the most common cause of fatal errors.

If you’re using the Epic Games Launcher or another platform:

  1. Open your game launcher.
  2. Navigate to your Library.
  3. Find Wuthering Waves.
  4. Select Verify Files (or similar option).

This process scans the installation and replaces corrupted or missing files automatically.

Why this works: If Line 677 is triggered by damaged core engine files, verification restores them without requiring a full reinstall.

2. Update Your Graphics Drivers

Outdated GPU drivers are a major culprit behind engine-level fatal errors.

To update your drivers:

  • Visit the official NVIDIA, AMD, or Intel website.
  • Download the latest driver for your specific GPU model.
  • Perform a clean installation if possible.

A clean install removes leftover driver fragments that may be causing instability.

Pro Tip: Avoid relying solely on Windows Device Manager for GPU updates—it often installs outdated versions.

3. Install or Repair Microsoft Visual C++ Redistributables

Many Unreal Engine-based games depend on specific Visual C++ packages. If these are missing or corrupted, crashes like Line 677 can occur.

Here’s how to fix it:

  1. Go to Microsoft’s official website.
  2. Download the latest supported Visual C++ Redistributables.
  3. Install both x64 and x86 versions.
  4. Restart your PC.

Even if you already have them installed, performing a repair can resolve hidden corruption.

4. Check Windows Updates

Your operating system plays a crucial role in game stability.

Make sure:

  • You’re running the latest Windows 10 or 11 updates.
  • All optional updates related to .NET Framework are installed.
  • No updates are stuck or pending.

Sometimes Fatal Error Line 677 occurs because your OS lacks an updated runtime library required by the game engine.

5. Disable Overlays and Background Programs

Overlays may seem harmless, but they can conflict with game engines.

Temporarily disable:

  • Discord overlay
  • GeForce Experience overlay
  • Steam overlay
  • RGB controller software
  • Third-party performance monitors

Also close unnecessary background applications before launching the game.

Why this matters: Some overlays hook into graphics APIs like DirectX or Vulkan. If two programs attempt RTX or shader-level interaction simultaneously, the engine may fail.

6. Run the Game as Administrator

Permission issues can cause unexplained crashes.

To run as admin:

  1. Right-click the Wuthering Waves executable.
  2. Select Properties.
  3. Open the Compatibility tab.
  4. Check Run as Administrator.

This ensures the game has full access to required system resources.

7. Check Your System’s Stability

If the error persists, consider hardware instability.

Common causes include:

  • Overclocked GPU or CPU
  • Faulty RAM
  • Power supply instability
  • Overheating components

What to do:

  • Revert any overclocking to default settings.
  • Run Windows Memory Diagnostic.
  • Monitor temperatures using trusted software.

Unstable hardware often reveals itself during demanding 3D rendering, making games the first thing to crash.

8. Reinstall the Game Completely

If verification does not work, try a full reinstall.

For best results:

  • Uninstall the game.
  • Manually delete leftover installation folders.
  • Restart your PC.
  • Download a fresh copy.

This clears hidden corrupted configs that verification might miss.

9. Check for DirectX Issues

DirectX corruption can trigger engine fatal errors.

To refresh DirectX:

  • Download the DirectX End User Runtime from Microsoft.
  • Install it manually.

This replaces potentially damaged DirectX components that Wuthering Waves relies on.

10. Adjust In Game Graphics Settings

If the crash happens shortly after launching into gameplay:

  • Reduce texture quality.
  • Disable ray tracing.
  • Lower shadow settings.
  • Cap your FPS.

Excessive VRAM usage can occasionally trigger memory allocation failures that manifest as Line 677 errors.

Advanced Fix: Increase Virtual Memory

In rare cases, insufficient virtual memory can contribute to engine crashes.

To increase it:

  1. Open System Properties.
  2. Go to Advanced System Settings.
  3. Select Performance → Settings.
  4. Open the Advanced tab and modify Virtual Memory.

Set it to “System managed” or manually assign a larger value.

When Nothing Works

If you’ve tried everything and Line 677 keeps appearing, the issue may stem from:

  • A deeper Windows installation problem
  • GPU hardware failure
  • Game specific bugs awaiting a patch

At that point:

  • Check official patch notes.
  • Look for community forums discussing the specific build version.
  • Submit a support ticket with crash logs attached.

Why This Error Happens in Modern Games

Modern games like Wuthering Waves run on complex engines that demand perfect harmony between hardware, drivers, and software libraries. Even a minor inconsistency—like a mismatched GPU driver or incomplete runtime package—can stop the engine entirely.

Fatal Error Line 677 isn’t random. It’s the engine’s emergency shutdown protocol kicking in when something risks data corruption or instability.

That’s frustrating—but also reassuring. The game is protecting your system rather than continuing into a full freeze.

Final Thoughts

Encountering Wuthering Waves Fatal Error Line 677 can be intimidating, especially with its technical appearance. But in most cases, the solution is surprisingly straightforward. A simple file verification or driver update resolves the issue for many players.

If the error persists, methodically working through system updates, redistributables, overlays, and hardware settings will almost always identify the culprit. The key is patience and systematic troubleshooting.

Once resolved, you can return to exploring Solaris-3 without interruption—and with a much more stable setup than before.

Happy gaming, and may your sessions be crash free.