Are you using latest dev package with DirectX11_2-winrt assemblies? (Which are only compatible with Windows 8.1)

I'm using SharpDX.dll version 2.5.1.0 and SharpDX.XAudio2.dll version 2.5.1.0 (from latest dev-package 2.5.1, from DirectX11_2-Signed-winrt folder)

Ok, but is it from Bin\DirectX11_2-winrt directory?

i took it from DirectX11_2-Signed-winrt folder

@rumyancevpavel,
I get the same error if there are no active audio devices in system (for example you are connected via Remote Desktop with Audio disabled).
Please check if you have an active audio device and let us know if this solves the issue.

I am using Win 8.1 and have no issues creating and using the MasteringVoice.

Public Class Audio3D_Class
'XAudio2 uses volumes from 0f to 1f, and Pan from -1f to 1f with 0f at center.
'All Sounds are 44.1Khz, 16bit, Mono, with stereo output.
'Device and MasteringVoice.
Private XAdevice As XAudio2
Private MasterVoice As MasteringVoice
'Constructor.''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Sub New()
XAdevice = New XAudio2()
MasterVoice = New MasteringVoice(XAdevice, 2, 44100)
CreateActions()
End Sub
.......
End Class

@ArtiomCiumac, yes, it seems that You right. I trying to run my code in Virtual Machine with no audio device. Thanks.