[Audio] Suddenly no sound for ALL my projects, and newer, all versions.

Development Audio
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1

Hi, I don’t know what to what to do, this has never happened to me in four years of UE4 usage, it’s really strange, only unreal has this problem with audio, but from today 09 april 2018, never had a problem before today.
As the title says, suddenly audio has stopped working only for unreal engine 4.
I have searched a lot, here and on google (most of the results redirecting here, in various threads). Nothing has helped me.

My system:

Windows 10 64 bit
CPU q9550 RAM 4gb VGA geforce gt750ti (it’s old but perfect)

Setup:

Audio is set to main device, drivers are correct, never got a problem.

Seems a windows problem, but only UE4 has this issues, so I wonder if something has gone wrong with unreal engine 4 suddenly. ( infact if I open log on a project says that has failed to create xaudio device)

Please help!

2

I will answer myself for tracking pourposes, and if someone will have my same issues.

I have solved with
reinstalling DirectX 2010 runtime,
reinstalling Visual C++ 2010 (x86 and x64),
checking that your Device is the default Audio Device in > tray volume icon,> rightclick > playback devices
checking that enable sound is checked in editor settings, but this is not possible because was an external issues, related with directx (probably I have installed directx 2010 programming SDK and that broke all my games and applications using that, including unreal engine 4).

Bye!