Errgfxd3dshader1 Work (2025)

If you are using Vulkan, switching to DirectX 12 (or vice-versa) can bypass the specific D3D shader failure.

Open the menu in-game (or edit system.xml in the folder mentioned above). Find the section. errgfxd3dshader1 work

The most effective fix is to force the game to rebuild its shader library. If you are using Vulkan, switching to DirectX

Do not delete system.xml yet; just the "sga" files. Restart the game; the next load will be longer as it regenerates these files. 2. Switch the Graphics API If you are using Vulkan

Right-click RDR2 > Properties > Local Files > Verify integrity of game files .

Navigate to: Documents\Rockstar Games\Red Dead Redemption 2\Settings .

Delete all files starting with (e.g., sga_vulkan_final_init.vk_pipeline_cache_vk ).