DirectX setup Internal Error when installing Mass Effect 3

When trying to install Mass Effect 3 on my Windows 7 machine I got the following message at 99% installed:

Mass Effect 3 DirectX Setup Error

I have made sure that i have the most resent version of DirectX form the web installer.

I found this video when searching for a solution

But I don't see a DirectX folder in the Mass Effect 3 folder.


  1. Go to C:\Program Files (x86)\Origin Games\Mass Effect 3\ __Installer\directx\redist

  2. Delete all the contents of the folder except for the following files: DSETUP.dll dsetup32.dll DXSETUP.exe

  3. Install Mass Effect 3 again.

Note change the Go to C:\Program Files (x86)\Origin Games prefix if you installed to a custom location.


Have you tried running DxDiag? See if you can get any additional information from there.

http://windows.microsoft.com/en-US/windows-vista/Run-DirectX-Diagnostic-Tool

DirectX Diagnostic Tool helps you troubleshoot issues with the DirectX suite of multimedia technologies that come with Windows. If you're having trouble getting game animation or a movie to run properly, you should run DirectX Diagnostic Tool to try to find the source of the problem.

To run DirectX Diagnostic Tool:

Open DirectX Diagnostic Tool by clicking the Start button, typing dxdiag in the Search box, and then pressing ENTER.

Note: I know this would be better as a comment, but I don't have comment everywhere yet. Just trying to help.


Reboot your computer after install, worked for me when it did not work until I rebooted.