diff --git a/Assets/Mirror/Authenticators/TimeoutAuthenticator.cs b/Assets/Mirror/Authenticators/TimeoutAuthenticator.cs
index 28f989bf9..16e667e90 100644
--- a/Assets/Mirror/Authenticators/TimeoutAuthenticator.cs
+++ b/Assets/Mirror/Authenticators/TimeoutAuthenticator.cs
@@ -18,7 +18,7 @@ public class TimeoutAuthenticator : NetworkAuthenticator
         public void Awake()
         {
             authenticator.OnServerAuthenticated.AddListener(connection => OnServerAuthenticated.Invoke(connection));
-            authenticator.OnClientAuthenticated.AddListener(connection => OnClientAuthenticated.Invoke(connection));
+            authenticator.OnClientAuthenticated.AddListener(OnClientAuthenticated.Invoke);
         }
 
         public override void OnStartServer()
@@ -57,12 +57,12 @@ public override void OnClientAuthenticate()
 
         IEnumerator BeginAuthentication(NetworkConnection conn)
         {
-            // Debug.Log($"Authentication countdown started {conn} {timeout}");
+            //Debug.Log($"Authentication countdown started {conn} {timeout}");
             yield return new WaitForSecondsRealtime(timeout);
 
             if (!conn.isAuthenticated)
             {
-                // Debug.Log($"Authentication Timeout {conn}");
+                Debug.LogError($"Authentication Timeout - Disconnecting {conn}");
                 conn.Disconnect();
             }
         }
diff --git a/Assets/Mirror/CompilerSymbols/PreprocessorDefine.cs b/Assets/Mirror/CompilerSymbols/PreprocessorDefine.cs
index 6944d1964..9a38c1172 100644
--- a/Assets/Mirror/CompilerSymbols/PreprocessorDefine.cs
+++ b/Assets/Mirror/CompilerSymbols/PreprocessorDefine.cs
@@ -38,7 +38,8 @@ public static void AddDefineSymbols()
                 "MIRROR_44_0_OR_NEWER",
                 "MIRROR_46_0_OR_NEWER",
                 "MIRROR_47_0_OR_NEWER",
-                "MIRROR_53_0_OR_NEWER"
+                "MIRROR_53_0_OR_NEWER",
+                "MIRROR_55_0_OR_NEWER"
             };
 
             // only touch PlayerSettings if we actually modified it.
diff --git a/Assets/Mirror/Runtime/NetworkAuthenticator.cs b/Assets/Mirror/Runtime/NetworkAuthenticator.cs
index 6a834275a..20c1352d1 100644
--- a/Assets/Mirror/Runtime/NetworkAuthenticator.cs
+++ b/Assets/Mirror/Runtime/NetworkAuthenticator.cs
@@ -17,7 +17,7 @@ public abstract class NetworkAuthenticator : MonoBehaviour
 
         /// <summary>Notify subscribers on the client when the client is authenticated</summary>
         [Tooltip("Mirror has an internal subscriber to this event. You can add your own here.")]
-        public UnityEventNetworkConnection OnClientAuthenticated = new UnityEventNetworkConnection();
+        public UnityEvent OnClientAuthenticated = new UnityEvent();
 
         /// <summary>Called when server starts, used to register message handlers if needed.</summary>
         public virtual void OnStartServer() {}
@@ -49,7 +49,7 @@ public virtual void OnStopClient() {}
 
         protected void ClientAccept()
         {
-            OnClientAuthenticated.Invoke(NetworkClient.connection);
+            OnClientAuthenticated.Invoke();
         }
 
         protected void ClientReject()
diff --git a/Assets/Mirror/Runtime/NetworkManager.cs b/Assets/Mirror/Runtime/NetworkManager.cs
index c95c2fd47..246e16574 100644
--- a/Assets/Mirror/Runtime/NetworkManager.cs
+++ b/Assets/Mirror/Runtime/NetworkManager.cs
@@ -1159,12 +1159,12 @@ void OnClientConnectInternal()
             else
             {
                 // authenticate immediately
-                OnClientAuthenticated(NetworkClient.connection);
+                OnClientAuthenticated();
             }
         }
 
         // called after successful authentication
-        void OnClientAuthenticated(NetworkConnection conn)
+        void OnClientAuthenticated()
         {
             //Debug.Log("NetworkManager.OnClientAuthenticated");
 
diff --git a/ProjectSettings/ProjectSettings.asset b/ProjectSettings/ProjectSettings.asset
index 465aec59e..7aecca87d 100644
--- a/ProjectSettings/ProjectSettings.asset
+++ b/ProjectSettings/ProjectSettings.asset
@@ -576,7 +576,7 @@ PlayerSettings:
   webGLThreadsSupport: 0
   webGLWasmStreaming: 0
   scriptingDefineSymbols:
-    1: MIRROR;MIRROR_17_0_OR_NEWER;MIRROR_18_0_OR_NEWER;MIRROR_24_0_OR_NEWER;MIRROR_26_0_OR_NEWER;MIRROR_27_0_OR_NEWER;MIRROR_28_0_OR_NEWER;MIRROR_29_0_OR_NEWER;MIRROR_30_0_OR_NEWER;MIRROR_30_5_2_OR_NEWER;MIRROR_32_1_2_OR_NEWER;MIRROR_32_1_4_OR_NEWER;MIRROR_35_0_OR_NEWER;MIRROR_35_1_OR_NEWER;MIRROR_37_0_OR_NEWER;MIRROR_38_0_OR_NEWER;MIRROR_39_0_OR_NEWER;MIRROR_40_0_OR_NEWER;MIRROR_41_0_OR_NEWER;MIRROR_42_0_OR_NEWER;MIRROR_43_0_OR_NEWER;MIRROR_44_0_OR_NEWER;MIRROR_46_0_OR_NEWER;MIRROR_47_0_OR_NEWER;MIRROR_53_0_OR_NEWER
+    1: MIRROR;MIRROR_17_0_OR_NEWER;MIRROR_18_0_OR_NEWER;MIRROR_24_0_OR_NEWER;MIRROR_26_0_OR_NEWER;MIRROR_27_0_OR_NEWER;MIRROR_28_0_OR_NEWER;MIRROR_29_0_OR_NEWER;MIRROR_30_0_OR_NEWER;MIRROR_30_5_2_OR_NEWER;MIRROR_32_1_2_OR_NEWER;MIRROR_32_1_4_OR_NEWER;MIRROR_35_0_OR_NEWER;MIRROR_35_1_OR_NEWER;MIRROR_37_0_OR_NEWER;MIRROR_38_0_OR_NEWER;MIRROR_39_0_OR_NEWER;MIRROR_40_0_OR_NEWER;MIRROR_41_0_OR_NEWER;MIRROR_42_0_OR_NEWER;MIRROR_43_0_OR_NEWER;MIRROR_44_0_OR_NEWER;MIRROR_46_0_OR_NEWER;MIRROR_47_0_OR_NEWER;MIRROR_53_0_OR_NEWER;MIRROR_55_0_OR_NEWER
   platformArchitecture: {}
   scriptingBackend: {}
   il2cppCompilerConfiguration: {}