diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index 5fdd28861..0a03cb1ba 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -5389,5 +5389,21 @@ HFONT CreateFont(
   <define name="RPC_C_AUTHN_LEVEL_CALL" value="3"/>
   <define name="RPC_C_AUTHN_LEVEL_PKT" value="4"/>
   <define name="RPC_C_AUTHN_LEVEL_PKT_INTEGRITY" value="5"/>
-  <define name="RPC_C_AUTHN_LEVEL_PKT_PRIVACY" value="6"/>
+  <define name="RPC_C_AUTHN_LEVEL_PKT_PRIVACY" value="6"/>  
+  <define name="RPC_C_AUTHN_NONE" value="0"/>
+  <define name="RPC_C_AUTHN_DCE_PRIVATE" value="1"/>
+  <define name="RPC_C_AUTHN_DCE_PUBLIC" value="2"/>
+  <define name="RPC_C_AUTHN_DEC_PUBLIC" value="3"/>
+  <define name="RPC_C_AUTHN_GSS_NEGOTIATE" value="4"/>
+  <define name="RPC_C_AUTHN_WINNT" value="10"/>
+  <define name="RPC_C_AUTHN_GSS_SCHANNEL" value="14"/>
+  <define name="RPC_C_AUTHN_GSS_KERBEROS" value="16"/>
+  <define name="RPC_C_AUTHN_DPA" value="17"/>
+  <define name="RPC_C_AUTHN_MSN" value="18"/>
+  <define name="RPC_C_AUTHN_KERNEL" value="20"/>
+  <define name="RPC_C_AUTHN_DIGEST" value="21"/>
+  <define name="RPC_C_AUTHN_NEGO_EXTENDER" value="30"/>
+  <define name="RPC_C_AUTHN_PKU2U" value="31"/>
+  <define name="RPC_C_AUTHN_MQ" value="100"/>
+  <define name="RPC_C_AUTHN_DEFAULT" value="0xFFFFFFFFL"/>
 </def>