One of the major frustrations of PC gamers is the infamous "[certain.dll] file is missing" type of errors. Often when install Half-Life: Alyx and try to play it, you will encounter this d3dx9_39.dll file missing error. In this post, we will learn how to diagnose d3dx9_39.dll related error in Half-Life: Alyx. Once we have diagnosed d3dx9_39.dll error in Half-Life: Alyx, we will look at various ways to fix it.
- Developer: Valve Corporation
- Publisher: Valve Corporation
- Release Date: March 23, 2020
What You Need to Run Half-Life: Alyx
Minimum Half-Life: Alyx Requirements
- Operating System: Windows 10
- Processor: Core i5-7500 / Ryzen 5 1600
- RAM/Memory: 12 GB RAM
- Display Card: GTX 1060 / RX 580 - 6GB VRAM
How to Fix d3dx9_39.dll is missing error in Half-Life: Alyx
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_39.dll is missing error in Half-Life: Alyx is to just download and install the version of DirectX that is required by Half-Life: Alyx.
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_39.dll
Another way of fixing d3dx9_39.dll is missing error in Half-Life: Alyx is to simply download d3dx9_39.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_39.dll related errors
