diff --git a/src/MaaWpfGui/Models/ResourceUpdater.cs b/src/MaaWpfGui/Models/ResourceUpdater.cs
index acc5456fb9..11b1d38438 100644
--- a/src/MaaWpfGui/Models/ResourceUpdater.cs
+++ b/src/MaaWpfGui/Models/ResourceUpdater.cs
@@ -170,8 +170,17 @@ namespace MaaWpfGui.Models
                 return (CheckUpdateRetT.UnknownError, null, null);
             }
 
-            var mirrorChyanCdkExpired = data["data"]?["cdk_expired_time"]?.ToObject<int?>() ?? null;
-            SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkExpiredTime = mirrorChyanCdkExpired ?? 0;
+            var mirrorChyanCdkExpired = data["data"]?["cdk_expired_time"]?.ToObject<long?>();
+
+            if (mirrorChyanCdkExpired.HasValue)
+            {
+                SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkExpiredTime = mirrorChyanCdkExpired.Value;
+                SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkFetchFailed = false;
+            }
+            else
+            {
+                SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkFetchFailed = true;
+            }
 
             var errorCode = data["code"]?.ToObject<MirrorChyanErrorCode>() ?? MirrorChyanErrorCode.Undivided;
             if (errorCode != MirrorChyanErrorCode.Success)
diff --git a/src/MaaWpfGui/Res/Localizations/en-us.xaml b/src/MaaWpfGui/Res/Localizations/en-us.xaml
index 7c6b698049..7d0dbc2313 100644
--- a/src/MaaWpfGui/Res/Localizations/en-us.xaml
+++ b/src/MaaWpfGui/Res/Localizations/en-us.xaml
@@ -322,6 +322,7 @@ You can cancel this popup by clicking the ｢{key=Settings} - {key=IssueReport}
     <system:String x:Key="MirrorChyanCdkQuotaExhausted">The CDK has reached the maximum download limit for today. Please try again tomorrow.</system:String>
     <system:String x:Key="MirrorChyanCdkMismatched">The CDK type does not match the resource to be downloaded. Please check the CDK's applicable scope.</system:String>
     <system:String x:Key="MirrorChyanCdkRemainingDays">CDK expires in {0} days.</system:String>
+    <system:String x:Key="MirrorChyanCdkFetchFailed">Failed to retrieve CDK information. Showing the result from the last successful query.</system:String>
     <system:String x:Key="NewVersionFoundTitle">New Version Found</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithGlobalSource">\nDownloading from ｢{key=GlobalSource}｣...</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithMirrorChyan">\nDownloading from ｢{key=MirrorChyan}｣...</system:String>
diff --git a/src/MaaWpfGui/Res/Localizations/ja-jp.xaml b/src/MaaWpfGui/Res/Localizations/ja-jp.xaml
index eda5967f6c..06b2728ae0 100644
--- a/src/MaaWpfGui/Res/Localizations/ja-jp.xaml
+++ b/src/MaaWpfGui/Res/Localizations/ja-jp.xaml
@@ -322,6 +322,7 @@
     <system:String x:Key="MirrorChyanCdkQuotaExhausted">CDK の本日のダウンロード回数が上限に達しました。明日もう一度お試しください。</system:String>
     <system:String x:Key="MirrorChyanCdkMismatched">CDK の種類がダウンロード対象のリソースと一致しません。CDK の適用範囲を確認してください。</system:String>
     <system:String x:Key="MirrorChyanCdkRemainingDays">CDK の有効期限は残り {0} 日です。</system:String>
+    <system:String x:Key="MirrorChyanCdkFetchFailed">CDK 情報の取得に失敗しました。前回正常に取得した結果を表示しています。</system:String>
     <system:String x:Key="NewVersionFoundTitle">新しいバージョンが見つかりました</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithGlobalSource">「{key=GlobalSource}」からダウンロード中...</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithMirrorChyan">「{key=MirrorChyan}」からダウンロード中...</system:String>
diff --git a/src/MaaWpfGui/Res/Localizations/ko-kr.xaml b/src/MaaWpfGui/Res/Localizations/ko-kr.xaml
index 0ab416d56f..31645ac0aa 100644
--- a/src/MaaWpfGui/Res/Localizations/ko-kr.xaml
+++ b/src/MaaWpfGui/Res/Localizations/ko-kr.xaml
@@ -321,6 +321,7 @@
     <system:String x:Key="MirrorChyanCdkQuotaExhausted">해당 CDK의 일일 다운로드 횟수가 제한에 도달했습니다. 내일 다시 시도해 주세요.</system:String>
     <system:String x:Key="MirrorChyanCdkMismatched">CDK 유형이 다운로드할 리소스와 일치하지 않습니다. CDK의 적용 범위를 확인해 주세요.</system:String>
     <system:String x:Key="MirrorChyanCdkRemainingDays">CDK 만료까지 {0}일 남았습니다.</system:String>
+    <system:String x:Key="MirrorChyanCdkFetchFailed">CDK 정보를 가져오지 못했습니다. 마지막으로 성공적으로 조회한 결과를 표시합니다.</system:String>
     <system:String x:Key="NewVersionFoundTitle">새로운 버전 확인</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithGlobalSource">｢{key=GlobalSource}｣ 에서 다운로드 중...</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithMirrorChyan">｢{key=MirrorChyan}｣ 에서 다운로드 중...</system:String>
diff --git a/src/MaaWpfGui/Res/Localizations/zh-cn.xaml b/src/MaaWpfGui/Res/Localizations/zh-cn.xaml
index 582a42a220..aedcbf404e 100644
--- a/src/MaaWpfGui/Res/Localizations/zh-cn.xaml
+++ b/src/MaaWpfGui/Res/Localizations/zh-cn.xaml
@@ -322,6 +322,7 @@
     <system:String x:Key="MirrorChyanCdkQuotaExhausted">CDK 今日下载次数已达上限，请明日再试。</system:String>
     <system:String x:Key="MirrorChyanCdkMismatched">CDK 类型与待下载的资源不匹配，请检查 CDK 适用范围。</system:String>
     <system:String x:Key="MirrorChyanCdkRemainingDays">CDK 还剩 {0} 天到期。</system:String>
+    <system:String x:Key="MirrorChyanCdkFetchFailed">获取 CDK 信息失败，已显示上次成功查询的结果。</system:String>
     <system:String x:Key="NewVersionFoundTitle">检测到新版本</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithGlobalSource">正在使用 ｢{key=GlobalSource}｣ 下载……</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithMirrorChyan">正在使用 ｢{key=MirrorChyan}｣ 下载……</system:String>
diff --git a/src/MaaWpfGui/Res/Localizations/zh-tw.xaml b/src/MaaWpfGui/Res/Localizations/zh-tw.xaml
index 7f8b7de1cc..8c4f2eb2f7 100644
--- a/src/MaaWpfGui/Res/Localizations/zh-tw.xaml
+++ b/src/MaaWpfGui/Res/Localizations/zh-tw.xaml
@@ -320,6 +320,7 @@
     <system:String x:Key="MirrorChyanCdkQuotaExhausted">CDK 今日下載次數已達上限，請明日再試。</system:String>
     <system:String x:Key="MirrorChyanCdkMismatched">CDK 類型與待下載的資源不匹配，請檢查 CDK 適用範圍。</system:String>
     <system:String x:Key="MirrorChyanCdkRemainingDays">CDK 還剩 {0} 天到期。</system:String>
+    <system:String x:Key="MirrorChyanCdkFetchFailed">獲取 CDK 資訊失敗，已顯示上次成功查詢的結果。</system:String>
     <system:String x:Key="NewVersionFoundTitle">檢測到新版本</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithGlobalSource">正在使用 ｢{key=GlobalSource}｣ 下載…</system:String>
     <system:String x:Key="NewVersionFoundDescDownloadingWithMirrorChyan">正在使用 ｢{key=MirrorChyan}｣ 下載…</system:String>
diff --git a/src/MaaWpfGui/ViewModels/UI/VersionUpdateViewModel.cs b/src/MaaWpfGui/ViewModels/UI/VersionUpdateViewModel.cs
index 77b98606f3..83af9f58b2 100644
--- a/src/MaaWpfGui/ViewModels/UI/VersionUpdateViewModel.cs
+++ b/src/MaaWpfGui/ViewModels/UI/VersionUpdateViewModel.cs
@@ -1019,8 +1019,17 @@ public class VersionUpdateViewModel : Screen
             return CheckUpdateRetT.UnknownError;
         }
 
-        var mirrorChyanCdkExpired = data["data"]?["cdk_expired_time"]?.ToObject<int?>() ?? null;
-        SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkExpiredTime = mirrorChyanCdkExpired ?? 0;
+        var mirrorChyanCdkExpired = data["data"]?["cdk_expired_time"]?.ToObject<long?>();
+
+        if (mirrorChyanCdkExpired.HasValue)
+        {
+            SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkExpiredTime = mirrorChyanCdkExpired.Value;
+            SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkFetchFailed = false;
+        }
+        else
+        {
+            SettingsViewModel.VersionUpdateSettings.MirrorChyanCdkFetchFailed = true;
+        }
 
         var errorCode = data["code"]?.ToObject<MirrorChyanErrorCode>() ?? MirrorChyanErrorCode.Undivided;
         if (errorCode != MirrorChyanErrorCode.Success)
diff --git a/src/MaaWpfGui/ViewModels/UserControl/Settings/VersionUpdateSettingsUserControlModel.cs b/src/MaaWpfGui/ViewModels/UserControl/Settings/VersionUpdateSettingsUserControlModel.cs
index f66b6a798a..186db9571a 100644
--- a/src/MaaWpfGui/ViewModels/UserControl/Settings/VersionUpdateSettingsUserControlModel.cs
+++ b/src/MaaWpfGui/ViewModels/UserControl/Settings/VersionUpdateSettingsUserControlModel.cs
@@ -340,6 +340,14 @@ public class VersionUpdateSettingsUserControlModel : PropertyChangedBase
         }
     }
 
+    private bool _mirrorChyanCdkFetchFailed = false;
+
+    public bool MirrorChyanCdkFetchFailed
+    {
+        get => _mirrorChyanCdkFetchFailed;
+        set => SetAndNotify(ref _mirrorChyanCdkFetchFailed, value);
+    }
+
     public DateTime MirrorChyanCdkExpiredDateTime => DateTimeOffset.FromUnixTimeSeconds(MirrorChyanCdkExpiredTime).DateTime;
 
     public DateTime MirrorChyanCdkExpiredLocalTime => MirrorChyanCdkExpiredDateTime.ToLocalTime();
diff --git a/src/MaaWpfGui/Views/UserControl/Settings/VersionUpdateSettingsUserControl.xaml b/src/MaaWpfGui/Views/UserControl/Settings/VersionUpdateSettingsUserControl.xaml
index 5fee5f5857..6885eaadd8 100644
--- a/src/MaaWpfGui/Views/UserControl/Settings/VersionUpdateSettingsUserControl.xaml
+++ b/src/MaaWpfGui/Views/UserControl/Settings/VersionUpdateSettingsUserControl.xaml
@@ -142,6 +142,15 @@
                             <controls:TextBlock
                                 MaxWidth="150"
                                 Margin="0,5,0,0"
+                                Visibility="{c:Binding MirrorChyanCdkFetchFailed}"
+                                Foreground="{DynamicResource ErrorLogBrush}"
+                                Text="{DynamicResource MirrorChyanCdkFetchFailed}"
+                                TextWrapping="Wrap" />
+                            <controls:TextBlock
+                                MaxWidth="150"
+                                Margin="0,5,0,0"
+                                d:Foreground="{DynamicResource SuccessLogBrush}"
+                                d:Text="{DynamicResource MirrorChyanCdkRemainingDays}"
                                 uiBehaviors:ResourceReferenceHelper.ForegroundResourceKey="{Binding MirrorChyanCdkRemainingBrush}"
                                 Text="{Binding MirrorChyanCdkRemainingText}"
                                 TextWrapping="Wrap"