diff --git a/src/DynamoApplications/StartupUtils.cs b/src/DynamoApplications/StartupUtils.cs
index e4b75db05a0..280d7bcadb9 100644
--- a/src/DynamoApplications/StartupUtils.cs
+++ b/src/DynamoApplications/StartupUtils.cs
@@ -245,9 +245,7 @@ private static IUpdateManager InitializeUpdateManager()
         {
             IPathResolver pathResolver = CreatePathResolver(false, string.Empty, string.Empty, string.Empty);
             PathManager.Instance.AssignHostPathAndIPathResolver(string.Empty, pathResolver);
-
-            Thread.CurrentThread.CurrentUICulture = new CultureInfo(PreferenceSettings.Instance.Locale);
-            Thread.CurrentThread.CurrentCulture = new CultureInfo(PreferenceSettings.Instance.Locale);
+            DynamoModel.SetUICulture(PreferenceSettings.Instance.Locale);
             DynamoModel.OnDetectLanguage();
 
             // Preload ASM and display corresponding message on splash screen
@@ -284,9 +282,7 @@ public static DynamoModel MakeModel(bool CLImode, string asmPath = "", string ho
         {
             IPathResolver pathResolver = CreatePathResolver(false, string.Empty, string.Empty, string.Empty);
             PathManager.Instance.AssignHostPathAndIPathResolver(string.Empty, pathResolver);
-
-            Thread.CurrentThread.CurrentUICulture = new CultureInfo(PreferenceSettings.Instance.Locale);
-            Thread.CurrentThread.CurrentCulture = new CultureInfo(PreferenceSettings.Instance.Locale);
+            DynamoModel.SetUICulture(PreferenceSettings.Instance.Locale);
             DynamoModel.OnDetectLanguage();
 
             // Preload ASM and display corresponding message on splash screen
@@ -425,8 +421,7 @@ public static string SetLocale(CommandLineArguments cmdLineArgs)
             if (!string.IsNullOrEmpty(cmdLineArgs.Locale))
             {
                 // Change the application locale, if a locale information is supplied.
-                Thread.CurrentThread.CurrentUICulture = new CultureInfo(cmdLineArgs.Locale);
-                Thread.CurrentThread.CurrentCulture = new CultureInfo(cmdLineArgs.Locale);
+                DynamoModel.SetUICulture(cmdLineArgs.Locale);
                 libgLocale = cmdLineArgs.Locale;
             }
             else
diff --git a/src/DynamoCore/Configuration/Configurations.cs b/src/DynamoCore/Configuration/Configurations.cs
index 60c4a34870d..fa2a42ea0fd 100644
--- a/src/DynamoCore/Configuration/Configurations.cs
+++ b/src/DynamoCore/Configuration/Configurations.cs
@@ -377,7 +377,7 @@ public class Configurations
         /// <summary>
         /// Supported locales as a list
         /// </summary>
-        internal static readonly List<string> SupportedLocaleList = new List<string>() { "en-US", "cs-CZ", "de-DE", "es-ES", "fr-FR", "it-IT", "ja-JP", "ko-KR", "pl-PL", "pt-BR", "ru-RU", "zh-CN", "zh-TW" };
+        internal static readonly List<string> SupportedLocaleList = new List<string>() { "Default", "en-US", "cs-CZ", "de-DE", "es-ES", "fr-FR", "it-IT", "ja-JP", "ko-KR", "pl-PL", "pt-BR", "ru-RU", "zh-CN", "zh-TW" };
 
         /// <summary>
         /// Supported languages and locales as a dictionary in the current thread locale
diff --git a/src/DynamoCore/Models/DynamoModel.cs b/src/DynamoCore/Models/DynamoModel.cs
index 4ca4738f112..e05d3e69c90 100644
--- a/src/DynamoCore/Models/DynamoModel.cs
+++ b/src/DynamoCore/Models/DynamoModel.cs
@@ -681,6 +681,13 @@ protected DynamoModel(IStartConfiguration config)
             PreferenceSettings = (PreferenceSettings)CreateOrLoadPreferences(config.Preferences);
             if (PreferenceSettings != null)
             {
+                // Setting the locale for Dynamo from loaded Preferences only when
+                // In a non-in-process integration case (when HostAnalyticsInfo.HostName is unspecified)
+                // Language is specified, otherwise Default setting means following host locale
+                if (string.IsNullOrEmpty(HostAnalyticsInfo.HostName) || !PreferenceSettings.Locale.Equals(Configuration.Configurations.SupportedLocaleList.First()))
+                {
+                    SetUICulture(PreferenceSettings.Locale);
+                }
                 PreferenceSettings.PropertyChanged += PreferenceSettings_PropertyChanged;
                 PreferenceSettings.MessageLogged += LogMessage;
             }
@@ -2698,6 +2705,15 @@ internal bool CanDumpLibraryToXml(object obj)
 
         #region public methods
 
+        /// <summary>
+        /// Set UI culture based on preferences
+        /// </summary>
+        public static void SetUICulture(string locale)
+        {
+            Thread.CurrentThread.CurrentUICulture = new CultureInfo(locale == "Default" ? "en-US" : locale);
+            Thread.CurrentThread.CurrentCulture = new CultureInfo(locale == "Default" ? "en-US" : locale);
+        }
+
         /// <summary>
         ///     Add a new HomeWorkspace and set as current
         /// </summary>
diff --git a/src/DynamoCore/Properties/Resources.Designer.cs b/src/DynamoCore/Properties/Resources.Designer.cs
index 917980b34bc..f523c41ad4c 100644
--- a/src/DynamoCore/Properties/Resources.Designer.cs
+++ b/src/DynamoCore/Properties/Resources.Designer.cs
@@ -570,7 +570,7 @@ public static string DuplicateMigrationTypeRegistered {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to English,Čeština,Deutsch,Español,Français,Italiano,日本語,한국어,Polski,Português (Brasil),Русский,简体中文,繁體中文.
+        ///   Looks up a localized string similar to Default,English,Čeština,Deutsch,Español,Français,Italiano,日本語,한국어,Polski,Português (Brasil),Русский,简体中文,繁體中文.
         /// </summary>
         public static string DynamoLanguages_noxlate {
             get {
diff --git a/src/DynamoCore/Properties/Resources.en-US.resx b/src/DynamoCore/Properties/Resources.en-US.resx
index 70da17d6afc..b40c51c4764 100644
--- a/src/DynamoCore/Properties/Resources.en-US.resx
+++ b/src/DynamoCore/Properties/Resources.en-US.resx
@@ -900,7 +900,7 @@ This package likely contains an assembly that is blocked. You will need to load
     <value>Example file added to workspace. Run mode changed to Manual.</value>
   </data>
   <data name="DynamoLanguages_noxlate" xml:space="preserve">
-    <value>English,Čeština,Deutsch,Español,Français,Italiano,日本語,한국어,Polski,Português (Brasil),Русский,简体中文,繁體中文</value>
+    <value>Default,English,Čeština,Deutsch,Español,Français,Italiano,日本語,한국어,Polski,Português (Brasil),Русский,简体中文,繁體中文</value>
   </data>
   <data name="FormulaDSConversionFailure" xml:space="preserve">
     <value>Formula failed to convert to DesignScript code. Please edit the formula manually to use it in a CodeBlock node.</value>
diff --git a/src/DynamoCore/Properties/Resources.resx b/src/DynamoCore/Properties/Resources.resx
index 523bd8cf3ea..77d3d8340dd 100644
--- a/src/DynamoCore/Properties/Resources.resx
+++ b/src/DynamoCore/Properties/Resources.resx
@@ -903,7 +903,7 @@ This package likely contains an assembly that is blocked. You will need to load
     <value>Example file added to workspace. Run mode changed to Manual.</value>
   </data>
   <data name="DynamoLanguages_noxlate" xml:space="preserve">
-    <value>English,Čeština,Deutsch,Español,Français,Italiano,日本語,한국어,Polski,Português (Brasil),Русский,简体中文,繁體中文</value>
+    <value>Default,English,Čeština,Deutsch,Español,Français,Italiano,日本語,한국어,Polski,Português (Brasil),Русский,简体中文,繁體中文</value>
   </data>
   <data name="FormulaDSConversionFailure" xml:space="preserve">
     <value>Formula failed to convert to DesignScript code. Please edit the formula manually to use it in a CodeBlock node.</value>
diff --git a/test/DynamoCoreTests/Configuration/PreferenceSettingsTests.cs b/test/DynamoCoreTests/Configuration/PreferenceSettingsTests.cs
index 0b1880756b0..9545df367c1 100644
--- a/test/DynamoCoreTests/Configuration/PreferenceSettingsTests.cs
+++ b/test/DynamoCoreTests/Configuration/PreferenceSettingsTests.cs
@@ -70,7 +70,7 @@ public void TestSettingsSerialization()
             Assert.AreEqual(settings.ViewExtensionSettings.Count, 0);
             Assert.AreEqual(settings.DefaultRunType, RunType.Automatic);
             Assert.AreEqual(settings.DynamoPlayerFolderGroups.Count, 0);
-            Assert.AreEqual(settings.Locale, "en-US");
+            Assert.AreEqual(settings.Locale, "Default");
 
             // Save
             settings.Save(tempPath);
@@ -89,7 +89,7 @@ public void TestSettingsSerialization()
             Assert.AreEqual(settings.ViewExtensionSettings.Count, 0);
             Assert.AreEqual(settings.DefaultRunType, RunType.Automatic);
             Assert.AreEqual(settings.DynamoPlayerFolderGroups.Count, 0);
-            Assert.AreEqual(settings.Locale, "en-US");
+            Assert.AreEqual(settings.Locale, "Default");
 
             // Change setting values
             settings.SetIsBackgroundPreviewActive("MyBackgroundPreview", false);