diff --git a/Nt32Pkg/RealTimeClockRuntimeDxe/RealTimeClock.c b/Nt32Pkg/RealTimeClockRuntimeDxe/RealTimeClock.c
index 929ceb55f6..6a44875503 100644
--- a/Nt32Pkg/RealTimeClockRuntimeDxe/RealTimeClock.c
+++ b/Nt32Pkg/RealTimeClockRuntimeDxe/RealTimeClock.c
@@ -1,6 +1,6 @@
 /**@file
 
-Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials                          
 are licensed and made available under the terms and conditions of the BSD License         
 which accompanies this distribution.  The full text of the license may be found at        
@@ -109,7 +109,7 @@ Returns:
 
   Time->Daylight = 0;
   if (TimeZone.StandardDate.wMonth) {
-    Time->Daylight = EFI_TIME_ADJUST_DAYLIGHT;
+    Time->Daylight = (UINT8) TimeZone.StandardDate.wMonth;
   }
 
   return EFI_SUCCESS;
@@ -162,7 +162,10 @@ Returns:
   gWinNt->GetTimeZoneInformation (&TimeZone);
   TimeZone.StandardDate.wMonth  = Time->Daylight;
   TimeZone.Bias                 = Time->TimeZone;
-  gWinNt->SetTimeZoneInformation (&TimeZone);
+  Flag = gWinNt->SetTimeZoneInformation (&TimeZone);
+  if (!Flag) {
+    return EFI_DEVICE_ERROR;
+  }
 
   SystemTime.wYear          = Time->Year;
   SystemTime.wMonth         = Time->Month;
diff --git a/Nt32Pkg/Sec/SecMain.c b/Nt32Pkg/Sec/SecMain.c
index 9048578ef7..0c859a2650 100644
--- a/Nt32Pkg/Sec/SecMain.c
+++ b/Nt32Pkg/Sec/SecMain.c
@@ -30,7 +30,9 @@ Abstract:
 
 #include "SecMain.h"
 
-
+#ifndef SE_TIME_ZONE_NAME
+#define SE_TIME_ZONE_NAME                 TEXT("SeTimeZonePrivilege")
+#endif
 
 NT_PEI_LOAD_FILE_PPI                      mSecNtLoadFilePpi     = { SecWinNtPeiLoadFile };
 
@@ -155,6 +157,8 @@ Returns:
 --*/
 {
   EFI_STATUS            Status;
+  HANDLE                Token;
+  TOKEN_PRIVILEGES      TokenPrivileges;
   EFI_PHYSICAL_ADDRESS  InitialStackMemory;
   UINT64                InitialStackMemorySize;
   UINTN                 Index;
@@ -168,6 +172,16 @@ Returns:
   CHAR16                *FirmwareVolumesStr;
   UINTN                 *StackPointer;
 
+  //
+  // Enable the privilege so that RTC driver can successfully run SetTime()
+  //
+  OpenProcessToken (GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &Token);
+  if (LookupPrivilegeValue(NULL, SE_TIME_ZONE_NAME, &TokenPrivileges.Privileges[0].Luid)) {
+    TokenPrivileges.PrivilegeCount = 1;
+    TokenPrivileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+    AdjustTokenPrivileges(Token, FALSE, &TokenPrivileges, 0, (PTOKEN_PRIVILEGES) NULL, 0);
+  }
+
   MemorySizeStr      = (CHAR16 *) PcdGetPtr (PcdWinNtMemorySizeForSecMain);
   FirmwareVolumesStr = (CHAR16 *) PcdGetPtr (PcdWinNtFirmwareVolume);
 
diff --git a/Nt32Pkg/Sec/SecMain.inf b/Nt32Pkg/Sec/SecMain.inf
index cfb7921f42..e9596b9b13 100644
--- a/Nt32Pkg/Sec/SecMain.inf
+++ b/Nt32Pkg/Sec/SecMain.inf
@@ -62,7 +62,7 @@
   gEfiNt32PkgTokenSpaceGuid.PcdWinNtFirmwareVolume
   
 [BuildOptions]
-  MSFT:*_*_IA32_DLINK_FLAGS == /out:"$(BIN_DIR)\SecMain.exe" /base:0x10000000 /pdb:"$(BIN_DIR)\SecMain.pdb" /LIBPATH:"$(VCINSTALLDIR)\Lib" /LIBPATH:"$(VCINSTALLDIR)\PlatformSdk\Lib" /NOLOGO /SUBSYSTEM:CONSOLE /NODEFAULTLIB /IGNORE:4086 /MAP /OPT:REF /DEBUG /MACHINE:I386 /LTCG Kernel32.lib MSVCRTD.lib Gdi32.lib User32.lib Winmm.lib
+  MSFT:*_*_IA32_DLINK_FLAGS == /out:"$(BIN_DIR)\SecMain.exe" /base:0x10000000 /pdb:"$(BIN_DIR)\SecMain.pdb" /LIBPATH:"$(VCINSTALLDIR)\Lib" /LIBPATH:"$(VCINSTALLDIR)\PlatformSdk\Lib" /NOLOGO /SUBSYSTEM:CONSOLE /NODEFAULTLIB /IGNORE:4086 /MAP /OPT:REF /DEBUG /MACHINE:I386 /LTCG Kernel32.lib MSVCRTD.lib Gdi32.lib User32.lib Winmm.lib Advapi32.lib
   MSFT:*_*_IA32_CC_FLAGS == /nologo /W4 /WX /Gy /c /D UNICODE /Od /FIAutoGen.h /EHs-c- /GF /Gs8192 /Zi /Gm /D _CRT_SECURE_NO_WARNINGS /D _CRT_SECURE_NO_DEPRECATE
   MSFT:*_*_IA32_PP_FLAGS == /nologo /E /TC /FIAutoGen.h
   MSFT:*_*_IA32_ASM_FLAGS == /nologo /W3 /WX /c /coff /Cx /Zd /W0 /Zi