What is D3D-COMPILER-ERROR?
Failed to compile HLSL shader is a high-severity graphics API (DirectX) issue. The driver failed to compile the shader program for the graphics card. It sometimes comes down to unreadable game files. The steps below are ordered to resolve this efficiently.
Common Causes
- Corrupt shader cache
- GPU driver error
- Unreadable game files
Step-by-Step Fix Guide
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1
Clean the Shader Cache with Disk Cleanup
Start with Clean the Shader Cache with Disk Cleanup — it clears the most frequent root cause behind D3D_COMPILER_ERROR in the majority of cases we've seen.
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2
Use DDU to install the new driver
Should the issue continue afterward, the remaining steps are there to cover the less common directx instability scenarios.
Commands & Diagnostics
cleanmgr
Frequently Asked Questions
D3D-COMPILER-ERROR is most often triggered by corrupt shader cache. Other reports point to GPU driver error and unreadable game files as contributing factors.
"Clean the Shader Cache with Disk Cleanup" clears up most D3D-COMPILER-ERROR reports by itself. The remaining steps above cover what's left.
Rated high severity — D3D-COMPILER-ERROR isn't immediately destructive, but recurring instances are a sign to fix it sooner rather than later.
Usually. D3D-COMPILER-ERROR is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
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