diff --git a/Bloxstrap/Bootstrapper.cs b/Bloxstrap/Bootstrapper.cs
index d68c50c..2fe3a0c 100644
--- a/Bloxstrap/Bootstrapper.cs
+++ b/Bloxstrap/Bootstrapper.cs
@@ -229,10 +229,32 @@ namespace Bloxstrap
             }
             catch (HttpResponseException ex)
             {
-                if (ex.ResponseMessage.StatusCode != HttpStatusCode.NotFound)
-                    throw;
+                // If channel does not exist
+                if (ex.ResponseMessage.StatusCode == HttpStatusCode.NotFound)
+                    App.Logger.WriteLine(LOG_IDENT, $"Reverting enrolled channel to {RobloxDeployment.DefaultChannel} because a WindowsPlayer build does not exist for {App.Settings.Prop.Channel}");
+                // If channel is not available to the user (private/internal release channel)
+                else if (ex.ResponseMessage.StatusCode == HttpStatusCode.Unauthorized)
+                {
+                    App.Logger.WriteLine(LOG_IDENT, $"Channel {App.Settings.Prop.Channel} is unavailable to the user.");
+                    // Only prompt if user has channel switching mode set to something other than Automatic.
+                    if (App.Settings.Prop.ChannelChangeMode != ChannelChangeMode.Automatic)
+                    {
+                        MessageBoxResult channelChangeResult = Controls.ShowMessageBox(
+                            $"Release channel {App.Settings.Prop.Channel} is not available to you. Would you like to reset to {RobloxDeployment.DefaultChannel}?",
+                            MessageBoxImage.Warning,
+                            MessageBoxButton.YesNo);
+
+                        if (channelChangeResult != MessageBoxResult.Yes)
+                        {
+                            Controls.ShowMessageBox($"Client cannot be launched as you are enrolled into an unavailable release channel and refused to reset.", MessageBoxImage.Error);
+                            App.Logger.WriteLine(LOG_IDENT, $"User refused to reset channel. Aborting.");
+                            App.Terminate(ErrorCode.ERROR_CANCELLED);
+                        }
+                    }
+                    App.Logger.WriteLine(LOG_IDENT, $"Resetting release channel to {RobloxDeployment.DefaultChannel} as {App.Settings.Prop.Channel} is unavailable to the user.");
+                }
+                else throw;
 
-                App.Logger.WriteLine(LOG_IDENT, $"Reverting enrolled channel to {RobloxDeployment.DefaultChannel} because a WindowsPlayer build does not exist for {App.Settings.Prop.Channel}");
                 App.Settings.Prop.Channel = RobloxDeployment.DefaultChannel;
                 clientVersion = await RobloxDeployment.GetInfo(App.Settings.Prop.Channel);
             }