C / C++ / MFC

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// This function is directly from MSDN website<br />
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HRESULT ModifyPrivilege(<br />
    IN LPCTSTR szPrivilege,<br />
    IN BOOL fEnable)<br />
{<br />
    HRESULT hr = S_OK;<br />
    TOKEN_PRIVILEGES NewState;<br />
    LUID             luid;<br />
    HANDLE hToken    = NULL;<br />
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    // Open the process token for this process.<br />
    if (!OpenProcessToken(GetCurrentProcess(),<br />
                          TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,<br />
                          &hToken ))<br />
    {<br />
        printf("Failed OpenProcessToken\n");<br />
        return -1;<br />
    }<br />
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    // Get the local unique id for the privilege.<br />
    if ( !LookupPrivilegeValue( NULL,<br />
                                szPrivilege,<br />
                                &luid ))<br />
    {<br />
        CloseHandle( hToken );<br />
        printf("Failed LookupPrivilegeValue\n");<br />
        return -1;<br />
    }<br />
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    // Assign values to the TOKEN_PRIVILEGE structure.<br />
    NewState.PrivilegeCount = 1;<br />
    NewState.Privileges[0].Luid = luid;<br />
    NewState.Privileges[0].Attributes = <br />
              (fEnable ? SE_PRIVILEGE_ENABLED : 0);<br />
<br />
    // Adjust the token privilege.<br />
    if (!AdjustTokenPrivileges(hToken,<br />
                               FALSE,<br />
                               &NewState,<br />
                               sizeof(NewState),<br />
                               NULL,<br />
                               NULL))<br />
    {<br />
        printf("Failed AdjustTokenPrivileges\n");<br />
        hr = -1;<br />
    }<br />
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    // Close the handle.<br />
    CloseHandle(hToken);<br />
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    return hr;<br />
}<br />
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// my code<br />
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HRESULT hr;<br />
hr = ModifyPrivilege(SE_RESTORE_NAME, TRUE);<br />
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CRegKey regkey;<br />
CString sRegFile = "MyFile.reg";  // this file was created with RegSaveKey<br />
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regkey.Open(HKEY_LOCAL_MACHINE,"SOFTWARE");<br />
lRet = RegRestoreKey(regkey.m_hKey,sRegFile,REG_NO_LAZY_FLUSH);<br />
// Here is where I get the ERROR_ACCESS_DENIED. I have Admin privilege on my machine.<br />
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