You won’t find d3dx3_30.dll in mainstream AAA titles often, but it appears in:
I have personally seen it linked in:
Note: Do not assume it is malicious – many old legit CD-ROM games used it. d3dx3 30.dll.
Errors with this DLL typically manifest during software installation, game launch, or while running a program. Here are the most common messages you might see: You won’t find d3dx3_30
These errors usually appear immediately upon launching a game or multimedia application. The program will often crash back to the desktop without any further explanation. I have personally seen it linked in:
| Action | Risk Level |
|--------|------------|
| Finding it in C:\Windows\System32 (as d3dx9_30.dll) | ✅ Low (legitimate) |
| Downloading from dll-files.com etc. | ⚠️ High (risk of malware) |
| Seeing d3dx3_30.dll on disk | 🔴 Suspicious — scan with antivirus |
| Typo in logs/error messages | 🟡 Check original source |
If you are using a platform like Steam, GOG, or the Epic Games Store, you can force the platform to check the game files.