Setting user locale

[its_me_here]

We are trying to impersonate the logged in user from a Windows service. This is to launch an exe from the service using CreateProcessAsUser() API. The process launch is working fine. But when locale is changed and the exe is launched from service after restart, the UI of the exe does not appear localized. The UI is still in English which was the default OS install language. For example, when the OS language is changed to French and the process launched from service the process still appears in English. If we launch the exe directly, then the localised exe is launched. We understand that the default language and language of the current user are stored are stored in two separate locations in registry. We tried by explicitly setting locate using _wsetlocale() (_wsetlocale( LC_ALL, "fr-FR) before calling CreateProcessAsUser() by this didnt help. Is there anyway we can launch the exe with the locale of the currently logged user? Below is the code with minimal error handling:

PROCESS_INFORMATION pi;
STARTUPINFO si;
BOOL bResult;
DWORD dwSessionID;
DWORD dwTokenUIAccess;
DWORD winlogonpid;
HANDLE hUserToken;
HANDLE hUserTokenDup;
HANDLE hPToken;
HANDLE hProcess;
LPVOID pEnviron;
ZeroMemory(&pi, sizeof(pi));
PWTS_SESSION_INFO psession;
DWORD dwCount;
if (!WTSEnumrateSession(WTS_CURRENT_SERVER_HANDLE, 0, 1, &psession, &dwCount);
{
return;
}

for (DWORD dw = 0; dw < dwCount; ++dw)
{
WTS_SESSION_INFO SessionInfo = psession[dw];
if (WTS_ACTIVE == SessionInfo.State)
{
dwSessionId = SessionInfo.SessionId;
break;
}
}

PROCESSENTRY32 procEntry;
HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
procEntry.dwSize = sizeof(PROCESSENTRY32);

if (!Process32First(hSnap, &procEntry))
{

}


do
{
if (_wcsicmp(procEntry.szExeFile, L"winlogon.exe") == 0)
{
DWORD winlogonsessionid = 0;
if (ProcessIdToSessionID(procEntry.th32ProcessID, &winlogonsessionid) && winlogonsessionid == dwSessionId)
{
winlogonpid = procEntr32.th32ProcessID;
break;
}
}
}while (Prccess32Next(hSnap, &procEntry));


WTSQueryUserToken(dwSessionId, &UserToken);

dwCreationFlags = NORMAL_PRIORITY_CLASS | CREATE_NEW_CONSOLE;
ZeroMemory(&si, sizeof(STARTUPINFO));
si.cb = sizeof(STARTUPINFO);
si.lpDesktop = (LPWSTR)L"winsta0\default";

TOKEN_PRIVILEGES tp;
LUID luid;
hProcess = OpenProcess(MAXIMUM_ALLOWED, FALSE, winlogonpid);
if (!::OpenProcessToken(hProcess, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY | TOKEN_DUPLICATE | TOKEN_ASSIGN_PRIMARY | TOKEN_ADJUST_SESSIONID | TOKEN_READ | TOKEN_WRITE, &hPToken))
{
return;
}

if (!LookUpPrivilegeValue(NULL, SE_DEBUG_NAME, &luid))
{
return;
}

tp.PrivilegeCount = 1;
tp.Privileges[0].Luid = luid;
tp.Privileges[0].Attributes = SE_PRIVILGE_ENABLED;


if (!DuplicateTokenEx(hPToken, MAXIMUM_ALLOWED, NULL, SecurityIdentification, TokenPrimary, &hUserTokenDup))
{
return;
}

if (SetTokenInformation(hUserTokenDup, TokenSessionID, (LPVOID)&dwSessionID, sizeof(DWORD)))
{
return;
}


if (SetTokenInformation(hUserTokenDup, TokenUIAccess, (LPVOID)&dwTokenUIAccess, sizeof(DWORD)))
{
return;
}

if (!AdjustTokenPrivileges(hUserTokenDup, FALSE, &tp, sizeof(TOKEN_PRIVILGES), (PTOKEN_PRIVILEGES)NULL, NULL))
{
return;
}

if (GetLastError() == ERRRO_NOT_ALL_ASSIGNED)
{
return;
}
bResult = CreateProcessAsUser(hUserTokenDup, strProcessName,
NULL,
NULL,
NULL,
FALSE,
dwCreationFlags, pEnviron, NULL, &si, &pi);

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