Method IAssemblyCache::UninstallAssembly (winsxs.h) - how use

How use this method in practic?

What i try:

#include <winsxs.h>
#include <atlbase.h>
#include <iostream>
typedef HRESULT (__stdcall *CreateAsmCache)(IAssemblyCache **ppAsmCache, DWORD dwReserved);

int main(){
   CoInitialize(0);
   HMODULE sxsModule = NULL;
   cout << "Sxs.dll " << (sxsModule = LoadLibraryA("Sxs.dll")) << endl;

   CreateAsmCache createAssemblyCache;
   cout << "GetProcAddress createAssemblyCache " << (createAssemblyCache = (CreateAsmCache) GetProcAddress(sxsModule, "CreateAssemblyCache")) << endl;

   IAssemblyCache *pCache = NULL;

   cout << "CreateAssemblyCache:" << createAssemblyCache(&pCache, 0) << endl;
   printf("pCache %p\n", pCache);

   wchar_t arg[] = L"x86_microsoft.vc80.debugcrt_1fc8b3b9a1e18e3b_8.0.50727.42_none_ef74ff32550b5bf0"; //example

   wprintf(L"%s uninstall result\n", arg);
   ULONG ulDisposition;
   HRESULT result = pCache->UninstallAssembly(0, arg, NULL, &ulDisposition);
   wprintf(L"0x%08lx %ld\n", result, ulDisposition);

   pCache->Release();
   CoUninitialize();

   return 0;
}

Output:

Sxs.dll 6BF60000
GetProcAddress createAssemblyCache 6BFAB130
CreateAssemblyCache:0
pCache 00689E28
x86_microsoft.vc80.debugcrt_1fc8b3b9a1e18e3b_8.0.50727.42_none_ef74ff32550b5bf0 uninstall result
0x00000000 0

Util must run as admin user.

Result 0, but nothing changes, nothing unistalled. Even i set to wchar_t arg[] = L"blablabla"; nothing changes. Results is 0x00000000 0.

P.S. InstallAssembly for sxs is works by the way. Tested on Windows 10 Pro x64, 1709 (16299.125)