diff --git a/NebulaAuth/Core/UpdateManager.cs b/NebulaAuth/Core/UpdateManager.cs
index 784fbec..d93e794 100644
--- a/NebulaAuth/Core/UpdateManager.cs
+++ b/NebulaAuth/Core/UpdateManager.cs
@@ -1,14 +1,7 @@
 using AutoUpdaterDotNET;
-using MaterialDesignThemes.Wpf;
 using NebulaAuth.Model;
-using NebulaAuth.View;
-using NebulaAuth.ViewModel.Other;
 using System;
 using System.IO;
-using System.Net;
-using System.Windows.Forms;
-using System.Windows.Threading;
-using Application = System.Windows.Application;
 
 
 namespace NebulaAuth.Core;
@@ -29,55 +22,55 @@ public static class UpdateManager
     }
 
 
-    static UpdateManager()
-    {
-        //AutoUpdater.CheckForUpdateEvent += AutoUpdaterOnCheckForUpdateEvent;
+    //static UpdateManager()
+    //{
+    //    //AutoUpdater.CheckForUpdateEvent += AutoUpdaterOnCheckForUpdateEvent;
 
-    }
+    //}
 
-    private static async void AutoUpdaterOnCheckForUpdateEvent(UpdateInfoEventArgs args)
-    {
-        if (args.Error == null)
-        {
-            if (args.IsUpdateAvailable)
-            {
-                DialogResult dialogResult;
-                var dialog = new UpdaterView()
-                {
-                    DataContext = new UpdaterVM(args)
-                };
+    //private static async void AutoUpdaterOnCheckForUpdateEvent(UpdateInfoEventArgs args)
+    //{
+    //    if (args.Error == null)
+    //    {
+    //        if (args.IsUpdateAvailable)
+    //        {
+    //            DialogResult dialogResult;
+    //            var dialog = new UpdaterView()
+    //            {
+    //                DataContext = new UpdaterVM(args)
+    //            };
 
-                await DialogHost.Show(dialog);
-                Application.Current.Shutdown();
+    //            await DialogHost.Show(dialog);
+    //            Application.Current.Shutdown();
 
-            }
-            else
-            {
+    //        }
+    //        else
+    //        {
 
-            }
-        }
-        else
-        {
-            if (args.Error is WebException)
-            {
+    //        }
+    //    }
+    //    else
+    //    {
+    //        if (args.Error is WebException)
+    //        {
 
-            }
-            else
-            {
+    //        }
+    //        else
+    //        {
 
-            }
-        }
+    //        }
+    //    }
 
-    }
+    //}
 
-    private static void RunUpdate(UpdateInfoEventArgs args)
-    {
-        Application.Current.Dispatcher.Invoke(() =>
-        {
-            if (AutoUpdater.DownloadUpdate(args))
-            {
-                Application.Current.Shutdown();
-            }
-        }, DispatcherPriority.ContextIdle);
-    }
+    //private static void RunUpdate(UpdateInfoEventArgs args)
+    //{
+    //    Application.Current.Dispatcher.Invoke(() =>
+    //    {
+    //        if (AutoUpdater.DownloadUpdate(args))
+    //        {
+    //            Application.Current.Shutdown();
+    //        }
+    //    }, DispatcherPriority.ContextIdle);
+    //}
 }
\ No newline at end of file
diff --git a/NebulaAuth/View/Dialogs/WaitLoginDialog.xaml b/NebulaAuth/View/Dialogs/WaitLoginDialog.xaml
index 6de5e85..41f263b 100644
--- a/NebulaAuth/View/Dialogs/WaitLoginDialog.xaml
+++ b/NebulaAuth/View/Dialogs/WaitLoginDialog.xaml
@@ -5,7 +5,6 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:theme="clr-namespace:NebulaAuth.Theme"
              mc:Ignorable="d" 
-             d:DesignHeight="450" d:DesignWidth="800"
              theme:FontScaleWindow.ResizeFont="True" theme:FontScaleWindow.Scale="1"
               Foreground="WhiteSmoke"
              Background="{DynamicResource WindowBackground}">
diff --git a/NebulaAuth/update.xml b/NebulaAuth/update.xml
index 0e9d39e..de7990a 100644
--- a/NebulaAuth/update.xml
+++ b/NebulaAuth/update.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <item>
-	<version>1.5.1.0</version>
-	<url>https://github.com/achiez/NebulaAuth-Steam-Desktop-Authenticator-by-Achies/releases/download/1.5.1/NebulaAuth.1.5.1.zip</url>
-	<changelog>https://achiez.github.io/NebulaAuth-Steam-Desktop-Authenticator-by-Achies/changelog/1.5.1.html</changelog>
+	<version>1.5.2.0</version>
+	<url>https://github.com/achiez/NebulaAuth-Steam-Desktop-Authenticator-by-Achies/releases/download/1.5.2/NebulaAuth.1.5.2.zip</url>
+	<changelog>https://achiez.github.io/NebulaAuth-Steam-Desktop-Authenticator-by-Achies/changelog/1.5.2.html</changelog>
 	<mandatory>false</mandatory>
 	
 </item>
\ No newline at end of file
diff --git a/SteamLibForked/Api/SteamGlobalApi.cs b/SteamLibForked/Api/SteamGlobalApi.cs
index 39f9421..4c6b2e9 100644
--- a/SteamLibForked/Api/SteamGlobalApi.cs
+++ b/SteamLibForked/Api/SteamGlobalApi.cs
@@ -1,9 +1,12 @@
-using Newtonsoft.Json;
+using AchiesUtilities.Models;
+using AchiesUtilities.Newtonsoft.JSON.Converters.Special;
+using Newtonsoft.Json;
 using SteamLib.Authentication;
 using SteamLib.Core;
 using SteamLib.Core.Enums;
 using SteamLib.Core.StatusCodes;
 using SteamLib.Exceptions;
+using SteamLib.Exceptions.General;
 
 namespace SteamLib.Api;
 
@@ -27,7 +30,17 @@ public static class SteamGlobalApi
         var cont = new FormUrlEncodedContent(data);
         var resp = await client.PostAsync("https://login.steampowered.com/jwt/ajaxrefresh", cont, cancellationToken);
         var respStr = await resp.EnsureSuccessStatusCode().Content.ReadAsStringAsync(cancellationToken);
-        var jwtRefresh = JsonConvert.DeserializeObject<JwtRefreshJson>(respStr);
+
+        JwtRefreshJson? jwtRefresh;
+        try
+        {
+            jwtRefresh = JsonConvert.DeserializeObject<JwtRefreshJson>(respStr);
+        }
+        catch (Exception ex)
+        {
+            throw new UnsupportedResponseException(respStr, ex);
+        }
+
         if (jwtRefresh?.Success != true)
         {
             Exception? inner = null;
@@ -52,14 +65,26 @@ public static class SteamGlobalApi
         cont = new FormUrlEncodedContent(data);
         var update = await client.PostAsync(jwtRefresh.LoginUrl, cont, cancellationToken);
         var updateResp = await update.Content.ReadAsStringAsync(cancellationToken);
-        if (updateResp != "{\"result\":1}")
+        JwtUpdateJson result;
+        try
+        {
+            result = JsonConvert.DeserializeObject<JwtUpdateJson>(updateResp) ?? throw new NullReferenceException();
+        }
+        catch (Exception ex)
+        {
+            throw new UnsupportedResponseException(updateResp, ex);
+        }
+
+        var resultStatus = SteamStatusCode.Translate<SteamStatusCode>(result.Result, out _);
+        if (resultStatus.Equals(SteamStatusCode.Ok) == false)
         {
             throw new SessionInvalidException(
                 "AjaxRefresh (set-token) response was not successful. Response string stored in Exception.Data")
             {
-                Data = {{"Response", updateResp}}
+                Data = { { "Response", updateResp } }
             };
         }
+
         return SteamTokenHelper.ExtractJwtFromSetCookiesHeader(update.Headers);
     }
 
@@ -74,5 +99,15 @@ public static class SteamGlobalApi
         [JsonProperty("auth")] public string Auth { get; set; } = string.Empty;
         [JsonProperty("error")] public int? Error { get; set; }
     }
+
+    private class JwtUpdateJson
+    {
+        [JsonProperty("result")]
+        public int Result { get; set; }
+
+        [JsonProperty("rtExpiry")]
+        [JsonConverter(typeof(UnixTimeStampConverter))]
+        public UnixTimeStamp RtExpiry { get; set; }
+    }
 }
 
diff --git a/changelog/1.5.2.html b/changelog/1.5.2.html
index 04ab1f6..613f9cc 100644
--- a/changelog/1.5.2.html
+++ b/changelog/1.5.2.html
@@ -67,16 +67,17 @@
         <!-- Changelog entry -->
         <div class="change">
             <div class="version">Version 1.5.2</div>
-            <div class="date">DATE</div>
+            <div class="date">18.09.2024</div>
             <div class="description">
-                - FIX: Potentially fixed problem with memory-leak on some devices (Windows 10, 11 Home/Professional)<br />
-                - FIX: Small performance improvements<br />
-                - UI: Added splash screen on application start <br/>
-                - UI: Added "Copy Login" in context menu of account on right-click. <br/>
-                - UI: Small localization update <br/>
-                - UI: Added tooltip to "Use Indicator" setting <br/>
-                - UI: Small design improvements <br/>
-                - UPDATE: most of the libraries were updated to the last version<br />
+               - HOTFIX: Resolved an issue introduced by the September 18, 2024, Steam update, where an error occurred during session refresh due to changes in Steam's response model.<br />
+               - FIX: Potentially resolved a memory leak issue on some devices (Windows 10, 11 Home/Professional).<br />
+               - FIX: Minor performance improvements.<br />
+               - UI: Added a splash screen on application startup.<br />
+               - UI: Added "Copy Login" option in the account context menu on right-click.<br />
+               - UI: Minor localization updates.<br />
+               - UI: Added a tooltip to the "Use Indicator" setting.<br />
+               - UI: Minor design improvements.<br />
+               - UPDATE: Most libraries have been updated to their latest versions.
             </div>
         </div>
     </div>