diff --git a/include/WinStd/Common.h b/include/WinStd/Common.h
index a61a287b..3bbc2e09 100644
--- a/include/WinStd/Common.h
+++ b/include/WinStd/Common.h
@@ -293,7 +293,7 @@ namespace winstd
     /// @{
 
     template<class _Ty> class sanitizing_allocator;
-    template<size_t N> class __declspec(novtable) sanitizing_blob;
+    template<size_t N> class sanitizing_blob;
 
 
     ///
@@ -1934,7 +1934,7 @@ namespace winstd
     /// Sanitizing BLOB
     ///
     template<size_t N>
-    class __declspec(novtable) sanitizing_blob
+    class sanitizing_blob
     {
     public:
         ///
diff --git a/include/WinStd/EAP.h b/include/WinStd/EAP.h
index f1820421..87539980 100644
--- a/include/WinStd/EAP.h
+++ b/include/WinStd/EAP.h
@@ -37,10 +37,10 @@ namespace winstd
     struct EapHostPeerFreeRuntimeMemory_delete;
     struct EapHostPeerFreeErrorMemory_delete;
     struct EapHostPeerFreeEapError_delete;
-    class __declspec(novtable) eap_attr;
-    class __declspec(novtable) eap_method_prop;
+    class eap_attr;
+    class eap_method_prop;
     class eap_packet;
-    class __declspec(novtable) eap_method_info_array;
+    class eap_method_info_array;
     class eap_runtime_error;
 
     /// \addtogroup WinStdEAPAPI
@@ -239,7 +239,7 @@ namespace winstd
     ///
     #pragma warning(push)
     #pragma warning(disable: 26432) // Copy constructor and assignment operator are also present, but not detected by code analysis as they are using base type source object reference.
-    class __declspec(novtable) eap_attr : public EAP_ATTRIBUTE
+    class eap_attr : public EAP_ATTRIBUTE
     {
     public:
         ///
@@ -348,7 +348,7 @@ namespace winstd
     ///
     /// EAP_METHOD_PROPERTY wrapper class
     ///
-    class __declspec(novtable) eap_method_prop : public EAP_METHOD_PROPERTY
+    class eap_method_prop : public EAP_METHOD_PROPERTY
     {
     public:
         ///
@@ -468,7 +468,7 @@ namespace winstd
     ///
     /// EAP_METHOD_INFO_ARRAY wrapper class
     ///
-    class __declspec(novtable) eap_method_info_array : public EAP_METHOD_INFO_ARRAY
+    class eap_method_info_array : public EAP_METHOD_INFO_ARRAY
     {
         WINSTD_NONCOPYABLE(eap_method_info_array)
 
diff --git a/include/WinStd/ETW.h b/include/WinStd/ETW.h
index 2950729f..d1e6c92f 100644
--- a/include/WinStd/ETW.h
+++ b/include/WinStd/ETW.h
@@ -37,8 +37,8 @@
 
 namespace winstd
 {
-    class __declspec(novtable) event_data;
-    class __declspec(novtable) event_rec;
+    class event_data;
+    class event_rec;
     class event_provider;
     class event_session;
     class event_trace;
@@ -84,7 +84,7 @@ namespace winstd
     ///
     /// EVENT_DATA_DESCRIPTOR wrapper
     ///
-    class __declspec(novtable) event_data : public EVENT_DATA_DESCRIPTOR
+    class event_data : public EVENT_DATA_DESCRIPTOR
     {
     public:
         ///
@@ -276,7 +276,7 @@ namespace winstd
     ///
     /// EVENT_RECORD wrapper
     ///
-    class __declspec(novtable) event_rec : public EVENT_RECORD
+    class event_rec : public EVENT_RECORD
     {
     public:
         ///