Were you playing oblivion, FEAR, or another game and received the D3dx9_27.dll missing error? In the following repair guide I’ll provide more details about the sources to this error and the steps required to repair it. By the end of this, you’ll be able to run that game with no problems. I hope you’ll find this post helpful.
This dll is part of Microsoft DirectX – a technology which is embedded by default in each Windows OS installation. This technology has been created by Microsoft in order to enhance the performance of multimedia rich applications – PC games as one example. The file is usually located at: C:\Windows\System32.
The majority of problems related to this file are encountered while trying to start PC games. You’d usually receive the following error message: This application has failed to start because d3dx9_27.dll was not found. Re-installing the application may fix this problem. Sometimes Windows might start the game, then popup that error message, but then you may encounter screen display problems and/or sound problems.
The causes to this error
The D3dx9_27.dll missing error may occur in two situations:
(1) Something went wrong with one of your video and/audio related drivers (Incompatible/obsolete).
(2) Something went wrong with the dll file itself (corrupt/missing,/incompatible).
(1) Detect and replace invalid audio and display related drivers
Download the following drivers diagnostics tool – It’ll scan all your installed drivers and be able to tell you which drivers are invalid. Invalid drivers must be replaced with their latest COMPATIBLE and official version.
(2) Update and refresh your DirectX installation
To complete the D3dx9_27.dll missing error repair, you need to refresh your DirectX installation, simply download and install the latest DirectX installation then restart your PC.