diff --git a/src/java.base/windows/native/libnet/NTLMAuthSequence.c b/src/java.base/windows/native/libnet/NTLMAuthSequence.c
index 0da2675b886..214df84ccb8 100644
--- a/src/java.base/windows/native/libnet/NTLMAuthSequence.c
+++ b/src/java.base/windows/native/libnet/NTLMAuthSequence.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -231,7 +231,7 @@ JNIEXPORT jbyteArray JNICALL Java_sun_net_www_protocol_http_ntlm_NTLMAuthSequenc
 
     if (ss < 0) {
         SetLastError(ss);
-        JNU_ThrowIOExceptionWithLastError(env, "InitializeSecurityContext");
+        JNU_ThrowIOExceptionWithMessageAndLastError(env, "InitializeSecurityContext");
         endSequence (pCred, pCtx, env, status);
         return 0;
     }
@@ -241,7 +241,7 @@ JNIEXPORT jbyteArray JNICALL Java_sun_net_www_protocol_http_ntlm_NTLMAuthSequenc
 
         if (ss < 0) {
             SetLastError(ss);
-            JNU_ThrowIOExceptionWithLastError(env, "CompleteAuthToken");
+            JNU_ThrowIOExceptionWithMessageAndLastError(env, "CompleteAuthToken");
             endSequence (pCred, pCtx, env, status);
             return 0;
         }