Errgfxd3dshader1 -

Windows stores compiled shaders to speed up games. Clearing forces fresh recompilation.

How to do it:

Alternatively (Windows 10/11):

Then restart your PC and launch the game again.

If you use:

Disable them one by one. For ReShade, move its .dll (e.g., dxgi.dll, d3d11.dll) out of the game folder temporarily.

Corrupted temporary files are a frequent cause. FiveM has a built-in tool for this.

Before trying fixes, it helps to understand the "why." This error usually stems from: errgfxd3dshader1

| Cause | Explanation | |-------|-------------| | Corrupted shader cache | Direct3D fails to compile a cached shader | | Missing shader model support | Your GPU doesn’t support the required shader model (e.g., SM5.0 needed but GPU only SM4.0) | | Broken graphics mod | ReShade or ENB preset references a nonexistent shader variable | | Memory corruption | Stack or heap corruption alters an error message string | | Obfuscated code | Malware or cracked software using misleading strings |

Use Process Monitor (Sysinternals) to filter for the process name when the error occurs — this tells you which .exe or .dll generated the string.

Summary

Common contexts where it appears

Likely causes

Observable symptoms

Diagnostic steps

  • Reproduce and isolate:
  • Check shader compilation output:
  • Test shader cache:
  • Validate resources and bindings:
  • Driver/OS checks:
  • Concurrency checks:
  • Hardware diagnosis:

    • Mitigations and fixes

  • Medium-term:
  • Long-term:

    • Reporting checklist for vendor/issue tracker

    Example concise log snippet to include in reports

    When to escalate

    References and tools (for debugging)

    Conclusion

    I wasn't able to find any authoritative or widely recognized reference to a term called "errgfxd3dshader1" — it does not appear in any standard technical documentation, graphics programming references, or known software/hardware error logs. Windows stores compiled shaders to speed up games

    However, based on the structure of the string, here is a feature-style breakdown of what it likely represents if encountered in the wild, and how to investigate it properly.

    Let’s decode the string piece by piece:

    | Fragment | Likely meaning | |----------|----------------| | err | Error | | gfx | Graphics | | d3d | Direct3D (DirectX graphics component) | | shader | Shader program (vertex, pixel, compute, or geometry shader) | | 1 | Error code 1 (often “invalid parameter” or “failed to create” in custom engines) |

    Put together:
    Graphics-related Direct3D shader error #1.

    This is almost certainly a custom error string from a specific game, graphics tool, or engine (e.g., Unity, Unreal, or a modded DirectX wrapper like ReShade or ENBSeries). The developer likely used a macro or debug output like:

    if (FAILED(hr)) DebugPrint("errgfxd3dshader1");

    Because it’s not a Microsoft system error, online searches return few results — but the underlying problem is real.