diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index ee4da8949..4dfcbd55f 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -5420,4 +5420,19 @@ HFONT CreateFont(
   <define name="RPC_C_AUTHN_PKU2U" value="31"/>
   <define name="RPC_C_AUTHN_MQ" value="100"/>
   <define name="RPC_C_AUTHN_DEFAULT" value="0xFFFFFFFFL"/>
+  <define name="RPC_C_AUTHZ_NONE" value="0"/>
+  <define name="RPC_C_AUTHZ_NAME" value="1"/>
+  <define name="RPC_C_AUTHZ_DCE" value="2"/>
+  <define name="RPC_C_AUTHZ_DEFAULT" value="0xffffffff"/>
+  <!-- COM Error codes (Generic) Ref: https://msdn.microsoft.com/en-us/library/windows/desktop/dd542643(v=vs.85).aspx-->
+  <define name="E_UNEXPECTED" value="0x8000FFFF"/>
+  <define name="E_NOTIMPL" value="0x80004001"/>
+  <define name="E_OUTOFMEMORY" value="0x8007000E"/>
+  <define name="E_INVALIDARG" value="0x80070057"/>
+  <define name="E_NOINTERFACE" value="0x80004002"/>
+  <define name="E_POINTER" value="0x80004003"/>
+  <define name="E_HANDLE" value="0x80070006"/>
+  <define name="E_ABORT" value="0x80004004"/>
+  <define name="E_FAIL" value="0x80004005"/>
+  <define name="E_ACCESSDENIED" value="0x80070005"/>
 </def>