diff --git a/Source/AuProcAddresses.NT.cpp b/Source/AuProcAddresses.NT.cpp
index 8868f9c6..a6f18ff3 100644
--- a/Source/AuProcAddresses.NT.cpp
+++ b/Source/AuProcAddresses.NT.cpp
@@ -313,22 +313,26 @@ namespace Aurora
         attrs.nLength        = sizeof(attrs);
         attrs.bInheritHandle = bInherit ? TRUE : FALSE;
 
+        if ((dwFlags & 0x4ffff7) &&
+            (!pCreateFile2))
+        {
+            SysPushErrorFeatureMissing("Do not use Windows8+ attributes/flags under Win32Open");
+            return INVALID_HANDLE_VALUE;
+        }
+
+        if ((dwAttributes & 0xFFB00008) &&
+            (!pCreateFile2))
+        {
+            SysPushErrorFeatureMissing("Do not use Windows8+ attributes/flags under Win32Open");
+            return INVALID_HANDLE_VALUE;
+        }
+        
         if (!dwAttributes)
         {
             dwAttributes = FILE_ATTRIBUTE_NORMAL;
         }
 
-        if (pCreateFileW)
-        {
-            return pCreateFileW(lpFileName,
-                                dwDesiredAccess,
-                                dwShareMode,
-                                &attrs,
-                                dwCreationDisposition,
-                                dwFlags | dwAttributes,
-                                NULL);
-        }
-        else if (pCreateFile2)
+        if (pCreateFile2)
         {
             _CREATEFILE2_EXTENDED_PARAMETERS params {};
 
@@ -350,6 +354,16 @@ namespace Aurora
                                 dwCreationDisposition,
                                 &params);
         }
+        else if (pCreateFileW)
+        {
+            return pCreateFileW(lpFileName,
+                                dwDesiredAccess,
+                                dwShareMode,
+                                &attrs,
+                                dwCreationDisposition,
+                                dwFlags | dwAttributes,
+                                NULL);
+        }
         else
         {
             return INVALID_HANDLE_VALUE;