diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index ff41af1372..93751678f9 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -706,18 +706,30 @@ class DscBuildData(PlatformBuildClassObject):
             GlobalData.gDefaultStores = sorted(self.DefaultStores.keys())
         return self.DefaultStores
 
+    def OverrideDuplicateModule(self):
+        RecordList = self._RawData[MODEL_META_DATA_COMPONENT, self._Arch]
+        Macros = self._Macros
+        Macros["EDK_SOURCE"] = GlobalData.gEcpSource
+        Components = {}
+        for Record in RecordList:
+            ModuleId = Record[6]
+            file_guid = self._RawData[MODEL_META_DATA_HEADER, self._Arch, None, ModuleId]
+            file_guid_str = file_guid[0][2] if file_guid else "NULL"
+            ModuleFile = PathClass(NormPath(Record[0], Macros), GlobalData.gWorkspace, Arch=self._Arch)
+            if self._Arch != TAB_ARCH_COMMON and (file_guid_str,str(ModuleFile)) in Components:
+                self._RawData.DisableOverrideComponent(Components[(file_guid_str,str(ModuleFile))])
+            Components[(file_guid_str,str(ModuleFile))] = ModuleId
+        self._RawData._PostProcessed = False
     ## Retrieve [Components] section information
     @property
     def Modules(self):
         if self._Modules is not None:
             return self._Modules
-
+        self.OverrideDuplicateModule()
         self._Modules = OrderedDict()
         RecordList = self._RawData[MODEL_META_DATA_COMPONENT, self._Arch]
         Macros = self._Macros
         for Record in RecordList:
-            DuplicatedFile = False
-
             ModuleFile = PathClass(NormPath(Record[0], Macros), GlobalData.gWorkspace, Arch=self._Arch)
             ModuleId = Record[6]
             LineNo = Record[7]
@@ -727,10 +739,6 @@ class DscBuildData(PlatformBuildClassObject):
             if ErrorCode != 0:
                 EdkLogger.error('build', ErrorCode, File=self.MetaFile, Line=LineNo,
                                 ExtraData=ErrorInfo)
-            # Check duplication
-            # If arch is COMMON, no duplicate module is checked since all modules in all component sections are selected
-            if self._Arch != TAB_ARCH_COMMON and ModuleFile in self._Modules:
-                DuplicatedFile = True
 
             Module = ModuleBuildClassObject()
             Module.MetaFile = ModuleFile
@@ -793,8 +801,6 @@ class DscBuildData(PlatformBuildClassObject):
                     Module.BuildOptions[ToolChainFamily, ToolChain] = OptionString + " " + Option
 
             RecordList = self._RawData[MODEL_META_DATA_HEADER, self._Arch, None, ModuleId]
-            if DuplicatedFile and not RecordList:
-                EdkLogger.error('build', FILE_DUPLICATED, File=self.MetaFile, ExtraData=str(ModuleFile), Line=LineNo)
             if RecordList:
                 if len(RecordList) != 1:
                     EdkLogger.error('build', OPTION_UNKNOWN, 'Only FILE_GUID can be listed in <Defines> section.',
diff --git a/BaseTools/Source/Python/Workspace/MetaFileParser.py b/BaseTools/Source/Python/Workspace/MetaFileParser.py
index f2322b36ac..6df0d3cdf8 100644
--- a/BaseTools/Source/Python/Workspace/MetaFileParser.py
+++ b/BaseTools/Source/Python/Workspace/MetaFileParser.py
@@ -1697,6 +1697,11 @@ class DscParser(MetaFileParser):
         self._ValueList = [ReplaceMacro(Value, self._Macros, RaiseError=False)
                            for Value in self._ValueList]
 
+    def DisableOverrideComponent(self,module_id):
+        for ori_id in self._IdMapping:
+            if self._IdMapping[ori_id] == module_id:
+                self._RawTable.DisableComponent(ori_id)
+
     _SectionParser = {
         MODEL_META_DATA_HEADER                          :   _DefineParser,
         MODEL_EFI_SKU_ID                                :   _SkuIdParser,
diff --git a/BaseTools/Source/Python/Workspace/MetaFileTable.py b/BaseTools/Source/Python/Workspace/MetaFileTable.py
index 004e9494c3..823a87e057 100644
--- a/BaseTools/Source/Python/Workspace/MetaFileTable.py
+++ b/BaseTools/Source/Python/Workspace/MetaFileTable.py
@@ -76,7 +76,7 @@ class MetaFileTable():
         self.CurrentContent.append(self._DUMMY_)
 
     def GetAll(self):
-        return [item for item in self.CurrentContent if item[0] >= 0 ]
+        return [item for item in self.CurrentContent if item[0] >= 0 and item[-1]>=0]
 
 ## Python class representation of table storing module data
 class ModuleTable(MetaFileTable):
@@ -373,7 +373,6 @@ class PlatformTable(MetaFileTable):
 
         QueryTab = self.CurrentContent
         result = [item for item in QueryTab if item[1] == Model and item[-1]>0 ]
-
         if Scope1 is not None and Scope1 != TAB_ARCH_COMMON:
             Sc1 = set(['COMMON'])
             Sc1.add(Scope1)
@@ -397,6 +396,10 @@ class PlatformTable(MetaFileTable):
         result = [ [r[2],r[3],r[4],r[5],r[6],r[7],r[0],r[9]] for r in result ]
         return result
 
+    def DisableComponent(self,comp_id):
+        for item in self.CurrentContent:
+            if item[0] == comp_id or item[8] == comp_id:
+                item[-1] = -1
 
 ## Factory class to produce different storage for different type of meta-file
 class MetaFileStorage(object):