diff --git a/modules/core/src/web/hooks/use-unsaved-changes-notifier/use-unsaved-changes-notifier.tsx b/modules/core/src/web/hooks/use-unsaved-changes-notifier/use-unsaved-changes-notifier.tsx
index 59e07acf..eb0e9381 100644
--- a/modules/core/src/web/hooks/use-unsaved-changes-notifier/use-unsaved-changes-notifier.tsx
+++ b/modules/core/src/web/hooks/use-unsaved-changes-notifier/use-unsaved-changes-notifier.tsx
@@ -49,12 +49,12 @@ export const UnsavedChangesProvider = ({ isDirty, children }: UnsavedChangesProv
     });
   }, [isDirty]);
 
-  const handleConfirm = useCallback((discardChanges: boolean) => {
-    if (discardChanges) {
+  const handleConfirm = useCallback((confirmed: boolean) => {
+    if (confirmed) {
       allowNavigationRef.current = true;
     }
 
-    resolverRef.current?.(discardChanges);
+    resolverRef.current?.(confirmed);
     resolverRef.current = null;
     setOpen(false);
   }, []);
@@ -94,6 +94,25 @@ export const UnsavedChangesProvider = ({ isDirty, children }: UnsavedChangesProv
     };
   }, []);
 
+  useEffect(() => {
+    if (!isDirty) return;
+
+    const handleBeforeUnload = (event: BeforeUnloadEvent) => {
+      if (allowNavigationRef.current) return;
+
+      event.preventDefault();
+
+      // Necesario para compatibilidad con navegadores legacy.
+      event.returnValue = "";
+    };
+
+    window.addEventListener("beforeunload", handleBeforeUnload);
+
+    return () => {
+      window.removeEventListener("beforeunload", handleBeforeUnload);
+    };
+  }, [isDirty]);
+
   const contextValue = useMemo<UnsavedChangesContextValue>(
     () => ({
       requestConfirm,