How to Fix d3dx9_43.dll is missing in Black Mesa

One of the major frustrations of PC gamers is the infamous "[certain.dll] file is missing" type of errors. Often when install Black Mesa and try to play it, you will encounter this d3dx9_43.dll file missing error. In this post, we will learn how to diagnose d3dx9_43.dll related error in Black Mesa. Once we have diagnosed d3dx9_43.dll error in Black Mesa, we will look at various ways to fix it.

  • Developer: Crowbar Collective
  • Publisher: Crowbar Collective
  • Release Date: March 6, 2020

What You Need to Run Black Mesa

Minimum Black Mesa Requirements

  • Operating System: Windows® 7 (32/64-bit)/Vista or Greater
  • Processor: 2.6 Dual Core Processor or Greater
  • RAM/Memory: 6 GB RAM
  • DirectX Version: Version 9.0c
  • Disk Space: 20 GB available space
  • Display Card: 2 GB Dedicated Video Card or Greater

How to Fix d3dx9_43.dll is missing error in Black Mesa

Download & install DirectX

DirectX is a bunch of APIs mixed together that handle multimedia related tasks such as playing high fi video games, video and 3D content. One of the basic steps to fix d3dx9_43.dll is missing error in Black Mesa is to just download and install the version of DirectX that is required by Black Mesa.

Typically, DirectX 9 or 11 do just fine for most video games.

Download DirectX9 here.

Often, just downloading and installing DirectX will solve your problem. However, if you are still facing the problem. Let's move on the next step, shall we?

Download & install d3dx9_43.dll

Another way of fixing d3dx9_43.dll is missing error in Black Mesa is to simply download d3dx9_43.dll file as per your PC configuration and install it in Windows\System32.

To download file from our secure servers, go to the following page: fix d3dx9_43.dll related errors

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