IVssBackupComponents::InitializeForBackup fails

IVssBackupComponents::InitializeForBackup failes with E_UNEXPECTED error. And in the Event viewer there are two errors:

Error 1

Volume Shadow Copy Service error: A critical component required by
    the Volume Shadow Copy service is not registered. This might
    happened if an error occurred during Windows setup or during
    installation of a Shadow Copy provider. 

   The error returned from
        CoCreateInstance on class with CLSID
        {e579ab5f-1cc4-44b4-bed9-de0991ff0623} and Name IVssCoordinatorEx2
        is [0x80040154, Class not registered ].

    Operation:
       Instantiating VSS server

Error 2

Volume Shadow Copy Service error: Unexpected error calling routine
    CoCreateInstance.  hr = 0x80040154, Class not registered.

    Operation:
      Instantiating VSS server

I have created simple "hello world" VSS program:

#include "vss.h"
#include "vswriter.h"
#include <VsBackup.h>
#include <stdio.h>

int main()
{
#define CHECK_PRINT(result) printf("%s %#08x\n",result==S_OK?"S_OK":"error", result)
  HRESULT  result = CoInitialize(NULL);
  CHECK_PRINT(result);
  IVssBackupComponents *VssHandle;
  result = CreateVssBackupComponents(&VssHandle);
  CHECK_PRINT(result);
  result = VssHandle->InitializeForBackup();
  CHECK_PRINT(result);
  return 0;
}

It reports the same output S_OK 00000000 S_OK 00000000 error 0x80042302

On my main development Windows 10 PC and virtual Windows10 with clean installation. VSS, swprv services are running.

Well. Debugging the disassembly with looking into the Process Monitor shows that in my case the problem was missing registry key

"HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{F2C2787D-95AB-40D4-942D-298F5F757874}"

google told me that the value should be

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{F2C2787D-95AB-40D4-942D-298F5F757874}]
@="PSFactoryBuffer"

[HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{F2C2787D-95AB-40D4-942D-298F5F757874}\InProcServer32]
@=hex(2):25,00,73,00,79,00,73,00,74,00,65,00,6d,00,72,00,6f,00,6f,00,74,00,25,\
00,5c,00,53,00,79,00,73,00,57,00,4f,00,57,00,36,00,34,00,5c,00,76,00,73,00,\
73,00,5f,00,70,00,73,00,2e,00,64,00,6c,00,6c,00,00,00
"ThreadingModel"="Both"