diff --git a/src/Infrastructure/BotSharp.OpenAPI/BotSharpOpenApiExtensions.cs b/src/Infrastructure/BotSharp.OpenAPI/BotSharpOpenApiExtensions.cs
index 4d85167f..a1a6dad2 100644
--- a/src/Infrastructure/BotSharp.OpenAPI/BotSharpOpenApiExtensions.cs
+++ b/src/Infrastructure/BotSharp.OpenAPI/BotSharpOpenApiExtensions.cs
@@ -11,7 +11,6 @@ using Microsoft.Net.Http.Headers;
 using Microsoft.OpenApi.Models;
 using Microsoft.IdentityModel.JsonWebTokens;
 using BotSharp.OpenAPI.BackgroundServices;
-using BotSharp.OpenAPI.Filters;
 
 namespace BotSharp.OpenAPI;
 
@@ -33,15 +32,6 @@ public static class BotSharpOpenApiExtensions
         services.AddScoped<IUserIdentity, UserIdentity>();
         services.AddHostedService<ConversationTimeoutService>();
 
-        var enableSingleLogin = bool.Parse(config["Jwt:EnableSingleLogin"] ?? "false");
-        if (enableSingleLogin)
-        {
-            services.AddMvc(options =>
-            {
-                options.Filters.Add<UserSingleLoginFilter>();
-            });
-        }
-
         // Add bearer authentication
         var schema = "MIXED_SCHEME";
         var builder = services.AddAuthentication(options =>
diff --git a/src/Infrastructure/BotSharp.OpenAPI/Filters/UserSingleLoginFilter.cs b/src/Infrastructure/BotSharp.OpenAPI/Filters/UserSingleLoginFilter.cs
deleted file mode 100644
index 032873c3..00000000
--- a/src/Infrastructure/BotSharp.OpenAPI/Filters/UserSingleLoginFilter.cs
+++ /dev/null
@@ -1,84 +0,0 @@
-using BotSharp.Abstraction.Users.Settings;
-using Microsoft.AspNetCore.Authentication.JwtBearer;
-using Microsoft.AspNetCore.Mvc.Filters;
-using Microsoft.Net.Http.Headers;
-using System.IdentityModel.Tokens.Jwt;
-
-namespace BotSharp.OpenAPI.Filters;
-
-public class UserSingleLoginFilter : IAuthorizationFilter
-{
-    private readonly IUserService _userService;
-    private readonly IServiceProvider _services;
-
-    public UserSingleLoginFilter(IUserService userService, IServiceProvider services)
-    {
-        _userService = userService;
-        _services = services;
-    }
-
-    public void OnAuthorization(AuthorizationFilterContext context)
-    {
-        var isAllowAnonymous = context.ActionDescriptor.EndpointMetadata
-            .Any(em => em.GetType() == typeof(AllowAnonymousAttribute));
-
-        if (isAllowAnonymous)
-        {
-            return;
-        }
-
-        var bearerToken = GetBearerToken(context);
-        if (!string.IsNullOrWhiteSpace(bearerToken))
-        {
-            var config = _services.GetRequiredService<AccountSetting>();
-            var token = GetJwtToken(bearerToken);
-
-            if (config.AllowMultipleDeviceLoginUserIds.Contains(token.Claims.First(x => x.Type == "nameid").Value))
-            {
-                return;
-            }
-
-            // Skip Qtoss AI user
-            if (token.Payload["source"]?.ToString() == "connect")
-            {
-                return;
-            }
-
-            var validTo = token.ValidTo.ToLongTimeString();
-            var currentExpires = GetUserExpires().ToLongTimeString();
-
-            if (validTo != currentExpires)
-            {
-                Serilog.Log.Warning($"Token expired. Token expires at {validTo}, current expires at {currentExpires}");
-                // login confict
-                context.Result = new ConflictResult();
-            }
-        }
-    }
-
-    private string GetBearerToken(AuthorizationFilterContext context)
-    {
-        if (context.HttpContext.Request.Headers.TryGetValue(HeaderNames.Authorization, out var bearerToken)
-           && !string.IsNullOrWhiteSpace(bearerToken.ToString()))
-        {
-            var tokenType = bearerToken.ToString().Split(" ").First();
-            if (tokenType == JwtBearerDefaults.AuthenticationScheme)
-            {
-                return bearerToken.ToString().Split(" ").Last();
-            }
-        }
-        return null;
-    }
-
-    private JwtSecurityToken GetJwtToken(string jwtToken)
-    {
-        var handler = new JwtSecurityTokenHandler();
-        var token = handler.ReadJwtToken(jwtToken);
-        return token;
-    }
-
-    private DateTime GetUserExpires()
-    {
-        return _userService.GetUserTokenExpires().GetAwaiter().GetResult();
-    }
-}