League of Legends The program can't start because d3dx_39.dll is missing

Have you most likely reinstalled your operating system or League of Legends, and the client is now operational, but you are unable to join a game due to an error message stating that d3dx9 39.dll is missing? On the Internet, it is difficult to resolve this issue, but it is simply a matter of finding a suitable DirectX download.

How to Fix a League of Legends Bug In Windows 10, the message "The program can't start because d3dx9 39.dll is missing from your computer" appears. Error during launch LeagueClient.exe Windows 8 System Error Works with Samsung, Lenovo, Toshiba, Asus, Acer, HP, Dell, and Alienware laptops and PCs.

The solution is as simple as downloading the DirectX package from Microsoft's official website. This is an executable file that may raise an eyebrow, but when you try to run it, your computer will remember it from Microsoft.

If this method doesn’t work for you!

01.  Download This File

02. Copy The DLL Files and Paste them into c:/Windows/system32 and c:/Windows/syswow64

How to Repair a Firewall Error Unable To Connect In League Of Legends. This error was resolved by following the steps stated below:

01. Go to” C:\Riot Games\League of Legends\RADS\projects”

02. Delete the Folder called “lol_launcher“

03. Relaunch League of Legends

04. The patcher will download a new “lol_launcher”