diff --git a/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/BaseHandler.cs b/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/BaseHandler.cs
index 159f422..c8ff18f 100644
--- a/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/BaseHandler.cs
+++ b/src/CSharp/EasyMicroservices.Laboratory/Engine/Net/BaseHandler.cs
@@ -61,7 +61,7 @@ public static BaseHandler CreateOSHandler(ResourceManager resourceManager)
             else
                 return new HttpHandler(resourceManager);
 #else
-            throw new NotSupportedException("Only support on net6.0 or grater!");
+            return new HttpHandler(resourceManager);
 #endif
         }
     }