diff --git a/dlls/rpcrt4/rpc_server.c b/dlls/rpcrt4/rpc_server.c
index 712a18ba85b..02509029111 100644
--- a/dlls/rpcrt4/rpc_server.c
+++ b/dlls/rpcrt4/rpc_server.c
@@ -235,6 +235,7 @@ static void RPCRT4_process_packet(RpcConnection* conn, RpcPktHdr* hdr, RPC_MESSA
 
       sif = RPCRT4_find_interface(object_uuid, &conn->ActiveInterface, TRUE);
       if (!sif) {
+        WARN("interface %s no longer registered, returning fault packet\n", debugstr_guid(&conn->ActiveInterface.SyntaxGUID));
         response = RPCRT4_BuildFaultHeader(NDR_LOCAL_DATA_REPRESENTATION,
                                            RPC_S_UNKNOWN_IF);
 
@@ -278,7 +279,10 @@ static void RPCRT4_process_packet(RpcConnection* conn, RpcPktHdr* hdr, RPC_MESSA
         msg->RpcFlags |= WINE_RPCFLAG_EXCEPTION;
         msg->BufferLength = sizeof(DWORD);
         I_RpcGetBuffer(msg);
-        *(DWORD*)msg->Buffer = GetExceptionCode();
+        if (GetExceptionCode() == STATUS_ACCESS_VIOLATION)
+            *(DWORD*)msg->Buffer = ERROR_NOACCESS;
+        else
+            *(DWORD*)msg->Buffer = GetExceptionCode();
       } __ENDTRY
 
       /* send response packet */