diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a411621..d89cf66 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ on:
 jobs:
   build:
 
-    runs-on: windows-2019
+    runs-on: windows-2025
 
     steps:
     - uses: actions/checkout@v2
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..1b61e09
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,52 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ master, develop ]
+  pull_request:
+    branches: [ master ]
+  schedule:
+    - cron: '23 12 * * 1'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: windows-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'csharp' ]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: ${{ matrix.language }}
+        queries: security-and-quality
+
+    - name: Setup MSBuild
+      uses: microsoft/setup-msbuild@v2
+
+    - name: Setup NuGet
+      uses: nuget/setup-nuget@v1
+      with:
+        nuget-version: 'latest'
+
+    - name: Restore dependencies
+      run: nuget restore pusher-dotnet-client.sln
+
+    - name: Build
+      run: msbuild /p:deterministic=true /p:msbuildArchitecture=x64 /p:configuration=Release pusher-dotnet-client.sln
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3
+      with:
+        category: "/language:${{matrix.language}}"
\ No newline at end of file
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 88ceb3f..293b482 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -7,7 +7,7 @@ on:
 jobs:
   build:
 
-    runs-on: windows-2019
+    runs-on: windows-2025
 
     steps:
     - uses: actions/checkout@v2
diff --git a/AuthHost/App.config b/AuthHost/App.config
index 78fc9b9..1c37715 100644
--- a/AuthHost/App.config
+++ b/AuthHost/App.config
@@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-  <appSettings>
-    <add key="Port" value="8888" />
-  </appSettings>
-</configuration>
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <appSettings>
+    <add key="Port" value="9000" />
+  </appSettings>
+</configuration>
diff --git a/AuthHost/AuthModule.cs b/AuthHost/AuthModule.cs
index ba7ffd5..584fe6b 100644
--- a/AuthHost/AuthModule.cs
+++ b/AuthHost/AuthModule.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Threading.Tasks;
 using Nancy;
+using Newtonsoft.Json;
 using PusherClient;
 using PusherClient.Tests.Utilities;
 using PusherServer;
@@ -60,6 +61,50 @@ public AuthModule()
 
                 return authData;
             };
+
+            // Add routes that ExampleApplication expects
+            Post["/pusher/auth"] = _ =>
+            {
+                Console.WriteLine($"Processing auth request for '{Request.Form.channel_name}' channel, for socket ID '{Request.Form.socket_id}'");
+
+                string channelName = Request.Form.channel_name;
+                string socketId = Request.Form.socket_id;
+
+                string authData = null;
+
+                if (Channel.GetChannelType(channelName) == ChannelTypes.Presence)
+                {
+                    var channelData = new PresenceChannelData
+                    {
+                        user_id = socketId,
+                        user_info = new { Name = "DefaultUser" }
+                    };
+
+                    authData = provider.Authenticate(channelName, socketId, channelData).ToJson();
+                }
+                else
+                {
+                    authData = provider.Authenticate(channelName, socketId).ToJson();
+                }
+
+                return authData;
+            };
+
+            Post["/pusher/auth-user"] = _ =>
+            {
+                Console.WriteLine($"Processing user auth request for socket ID '{Request.Form.socket_id}'");
+
+                string socketId = Request.Form.socket_id;
+
+                // For user authentication, return a simple user auth response
+                var userAuthResponse = new
+                {
+                    auth = $"{PusherApplicationKey}:{socketId}",
+                    user_data = JsonConvert.SerializeObject(new { id = socketId, name = "DefaultUser" })
+                };
+
+                return JsonConvert.SerializeObject(userAuthResponse);
+            };
         }
 
         private async Task SendSecretMessageAsync()
@@ -82,4 +127,4 @@ private async Task SendSecretMessageAsync()
             Console.WriteLine(secretMessage);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 683b964..c007432 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,7 @@
-# Changelog
+# Changelog
+
+## 
+* [CHANGED] Force TLS 1.2 by default.
 
 ## 2.3.0-beta
 * [Added] Introduce user features
diff --git a/PusherClient/Connection.cs b/PusherClient/Connection.cs
index 4ea5480..752674c 100644
--- a/PusherClient/Connection.cs
+++ b/PusherClient/Connection.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Security.Authentication;
 using System.Threading;
 using System.Threading.Tasks;
 using Newtonsoft.Json;
@@ -50,7 +51,8 @@ public async Task ConnectAsync()
 
                 ChangeState(ConnectionState.Connecting);
 
-                _websocket = new WebSocket(_url)
+                _websocket = new WebSocket(_url, "", null, null, "",
+                    "", WebSocketVersion.None, null, SslProtocols.Tls12)
                 {
                     EnableAutoSendPing = true,
                     AutoSendPingInterval = 1
@@ -210,13 +212,13 @@ private void ProcessPusherEvent(string eventName, string rawJson, Dictionary<str
             {
                 messageData = (string)message["data"];
             }
-            
+
             switch (eventName)
             {
                 case Constants.CONNECTION_ESTABLISHED:
                     ParseConnectionEstablished(messageData);
                     break;
-                    
+
                 case Constants.PUSHER_SIGNIN_SUCCESS:
                 case Constants.PUSHER_WATCHLIST_EVENT:
                     EmitEvent(eventName, rawJson, message);
@@ -244,7 +246,7 @@ private bool ProcessPusherChannelEvent(string eventName, string channelName, str
                 case Constants.CHANNEL_MEMBER_REMOVED:
                     _pusher.RemoveMember(channelName, messageData);
                     break;
-                
+
                 case Constants.CHANNEL_SUBSCRIPTION_COUNT:
                     _pusher.SubscriberCount(channelName, messageData);
                     break;
@@ -292,7 +294,7 @@ private void WebsocketMessageReceived(object sender, MessageReceivedEventArgs e)
                          *    "event": "pusher:connection_established",
                          *    "data": "{\"socket_id\":\"131160.155806628\"}"
                          *  }
-                         *  
+                         *
                          *  {
                          *    "event": "pusher_internal:subscription_succeeded",
                          *    "data": "{\"presence\":{\"count\":1,\"ids\":[\"131160.155806628\"],\"hash\":{\"131160.155806628\":{\"name\":\"user-1\"}}}}",
@@ -470,7 +472,8 @@ private void DisposeWebsocket()
         private void RecreateWebSocket()
         {
             DisposeWebsocket();
-            _websocket = new WebSocket(_url)
+            _websocket = new WebSocket(_url, "", null, null, "",
+    "", WebSocketVersion.None, null, SslProtocols.Tls12)
             {
                 EnableAutoSendPing = true,
                 AutoSendPingInterval = 1
diff --git a/Root.Build.props b/Root.Build.props
index dd96fb2..a43217b 100644
--- a/Root.Build.props
+++ b/Root.Build.props
@@ -12,9 +12,9 @@
     <PackageDescription>The .NET library for interacting with the Pusher WebSocket API. Register at http://pusher.com</PackageDescription>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageIcon>icon-128.png</PackageIcon>
-    <Version>2.3.0-beta</Version>
-    <AssemblyVersion>2.3.0.0</AssemblyVersion>
-    <FileVersion>2.3.0.0</FileVersion>
+    <Version></Version>
+    <AssemblyVersion>.0</AssemblyVersion>
+    <FileVersion>.0</FileVersion>
   </PropertyGroup>
 
 </Project>