QWindowsEGLStaticContext::create: Could not initialize

[grkr]

Qt 5.8.0 ( MSVC2015) / Win7 32-bit.
On starting release version desctop app from QtCreator :

QWindowsEGLStaticContext::create: Could not initialize EGL display: error 0x3001 
QWindowsEGLStaticContext::create: When using ANGLE, check if d3dcompiler_4x.dll is available

What is it ?
d3dcompiler_4x.dll is really available by path.