Unable to load module UE4Editor-XAudio2.dll

Hi,

I’m having trouble with probably a minor problem. I have no sound even with default project like «first person shooter», when I open a project I have this message for every project →

LogModuleManager:Warning: ModuleManager: Unable to load module ‘C:/Program Files/Epic Games/UE_4.15/Engine/Binaries/Win64/UE4Editor-XAudio2.dll’ because the file couldn’t be loaded by the OS.

I tried to put directX up to date, also tried to update my audio device (didn’t have any update).

I’m a little lost right now, if some one have an idea of what I should do.

up! someone have an idea to correct this?

up! even with the last engine version I still face the same problem.