diff --git a/reactos/include/psdk/winbase.h b/reactos/include/psdk/winbase.h
index 1d4f8c9411c..a0c9b9505b3 100644
--- a/reactos/include/psdk/winbase.h
+++ b/reactos/include/psdk/winbase.h
@@ -336,9 +336,15 @@ extern "C" {
 #define LOCKFILE_EXCLUSIVE_LOCK 2
 #define LOGON32_PROVIDER_DEFAULT	0
 #define LOGON32_PROVIDER_WINNT35	1
+#define LOGON32_PROVIDER_WINNT40	2
+#define LOGON32_PROVIDER_WINNT50	3
 #define LOGON32_LOGON_INTERACTIVE	2
+#define LOGON32_LOGON_NETWORK	3
 #define LOGON32_LOGON_BATCH	4
 #define LOGON32_LOGON_SERVICE	5
+#define LOGON32_LOGON_UNLOCK	7
+#define LOGON32_LOGON_NETWORK_CLEARTEXT	8
+#define LOGON32_LOGON_NEW_CREDENTIALS	9
 #define MOVEFILE_REPLACE_EXISTING 1
 #define MOVEFILE_COPY_ALLOWED 2
 #define MOVEFILE_DELAY_UNTIL_REBOOT 4