Reparar 2025 d3dx9_43.dll missing error en Windows 10 y 11: guía paso a paso

Summary

Nothing halts your gaming momentum quite like the dreaded d3dx9_43.dll missing error on Windows 10 or 11. If you’re staring at a crash message instead of your game menu, you’ve come to the right place. This clear, step-by-step guide will demystify the issue and provide reliable solutions, from a simple DirectX reinstall to using built-in system tools. Follow our straightforward instructions to get back to your game without the frustration.

Reinstalación del juego o aplicación afectada

If the d3dx9_43.dll missing error stubbornly persists after a DirectX reinstall and system scans, the culprit is almost certainly isolated to the game or application itself. This scenario is common when the software’s installer places its own specific copy of the DLL file within its directory, and that local copy becomes corrupted or is deleted. A clean reinstallation is a highly effective, if slightly more time-consuming, solution that resets all the game’s files to a pristine state.

The process is more than just a simple uninstall and reinstall; to ensure a true clean slate, you must also remove any residual configuration files. Here’s the most thorough approach for a guaranteed d3dx9_43.dll game not launching fix:

1. Uninstall via Settings: Go to Settings > Apps > Installed apps, find the game, and select Uninstall.
2. Manually Delete Residual Folders: After uninstalling, navigate to the game’s installation directory (common locations include C:\Program Files\ or C:\Program Files (x86)\, or your custom Steam/Epic Games library folder). Delete any remaining folders related to the game.
3. Clear AppData (Critical Step): Press Windows Key + R, type %appdata%, and press Enter. This opens the Roaming folder. Look for and delete any folder with the game’s or developer’s name. Repeat this process for %localappdata%. These folders store settings and temporary data that can harbor corruption.
4. Reinstall the Game: Finally, launch your game client (Steam, Epic, etc.) and perform a fresh installation.

Why This Works: This method eliminates every trace of the previous installation, including a potentially corrupted local d3dx9_43.dll file. The new installer will then deploy a fresh, working copy of all necessary files, including the correct DLL version.

This targeted reinstallation, when combined with the previously completed system-wide repairs, addresses the problem from every possible angle. If your game is finally running, the issue is resolved. However, if the error still appears, we have one final, powerful system tool to employ.

Uso de herramientas del sistema como SFC y DISM

When the d3dx9_43.dll missing error refuses to yield after reinstalling DirectX and the affected game, it’s a clear signal of deeper system-level file corruption. This is where Windows’ built-in repair utilities, the System File Checker (SFC) and the Deployment Image Servicing and Management (DISM) tool, transition from diagnostic steps to powerful repair mechanisms. Think of them as your system’s surgical team: SFC acts as the first responder, fixing individual corrupted files, while DISM operates as the specialist that repairs the underlying Windows image SFC relies on.

Running an SFC scannow is your definitive first action. As detailed in the diagnostic phase, you must execute this from an elevated Command Prompt. The command sfc /scannow will scan all protected system files. If it reports successfully repairing corruption, a system restart will finalize the changes, and this alone often resolves the DLL error. However, if SFC finds corruption but cannot fix it, the problem lies with its source files. This is your cue to deploy DISM.

The SFC & DISM Tandem: It’s crucial to run these tools in sequence. DISM ensures the health of the component store (the “source” for system files), which then allows SFC to perform effective repairs. Running SFC after a successful DISM operation is always recommended.

Here is the precise sequence for a comprehensive repair:

1. Run DISM: In an admin Command Prompt, type DISM /Online /Cleanup-Image /RestoreHealth and press Enter. This command connects to Windows Update to download replacement files for corrupted components. It may take 10-20 minutes; ensure a stable internet connection.
2. Run SFC Again: After DISM completes successfully, run sfc /scannow again. With a healthy component store, SFC can now replace the corrupted d3dx9_43.dll and other system files with genuine versions.
3. Restart Your PC: A final restart is non-negotiable to load the newly repaired files.

This one-two punch of DISM and SFC addresses system file corruption that simpler reinstallations cannot touch, providing a robust d3dx9_43.dll missing fix. By methodically applying these tools, you restore your system’s core integrity, leaving no stone unturned in the quest to get your game launching flawlessly again.

Conclusion

By following this step-by-step guide, you can systematically resolve the d3dx9_43.dll missing error and get back to gaming. The solutions provided, from a clean DirectX reinstall to using the SFC scannow tool, offer a clear path to restoring your system’s integrity. For a lasting fix, remember to verify the integrity of your game files through its client or platform after applying these repairs.