diff --git a/framework/src/Volo.Abp.Authorization/Microsoft/AspNetCore/Authorization/AbpAuthorizationServiceExtensions.cs b/framework/src/Volo.Abp.Authorization/Microsoft/AspNetCore/Authorization/AbpAuthorizationServiceExtensions.cs
index a4cbb27da5..9d16a6a55c 100644
--- a/framework/src/Volo.Abp.Authorization/Microsoft/AspNetCore/Authorization/AbpAuthorizationServiceExtensions.cs
+++ b/framework/src/Volo.Abp.Authorization/Microsoft/AspNetCore/Authorization/AbpAuthorizationServiceExtensions.cs
@@ -1,25 +1,12 @@
 using System.Collections.Generic;
-using System.Security.Claims;
 using System.Threading.Tasks;
 using Volo.Abp;
 using Volo.Abp.Authorization;
-using Volo.Abp.Threading;
 
 namespace Microsoft.AspNetCore.Authorization
 {
-    // TODO: Complete all Sync extension methods!
     public static class AbpAuthorizationServiceExtensions
     {
-        public static AuthorizationResult Authorize(this IAuthorizationService authorizationService, ClaimsPrincipal user, object resource, string policyName)
-        {
-            return AsyncHelper.RunSync(() => authorizationService.AuthorizeAsync(user, resource, policyName));
-        }
-
-        public static AuthorizationResult Authorize(this IAuthorizationService authorizationService, ClaimsPrincipal user, object resource, IEnumerable<IAuthorizationRequirement> requirements)
-        {
-            return AsyncHelper.RunSync(() => authorizationService.AuthorizeAsync(user, resource, requirements));
-        }
-
         public static Task<AuthorizationResult> AuthorizeAsync(this IAuthorizationService authorizationService, string policyName)
         {
             return AuthorizeAsync(
@@ -29,15 +16,6 @@ namespace Microsoft.AspNetCore.Authorization
             );
         }
 
-        public static AuthorizationResult Authorize(this IAuthorizationService authorizationService, string policyName)
-        {
-            return Authorize(
-                authorizationService, 
-                authorizationService.AsAbpAuthorizationService().CurrentPrincipal,
-                policyName
-            );
-        }
-
         public static Task<AuthorizationResult> AuthorizeAsync(this IAuthorizationService authorizationService, object resource, IAuthorizationRequirement requirement)
         {
             return authorizationService.AuthorizeAsync(
@@ -81,25 +59,11 @@ namespace Microsoft.AspNetCore.Authorization
             );
         }
 
-        public static AuthorizationResult Authorize(this IAuthorizationService authorizationService, object resource, string policyName)
-        {
-            return authorizationService.Authorize(
-                authorizationService.AsAbpAuthorizationService().CurrentPrincipal,
-                resource,
-                policyName
-            );
-        }
-
         public static async Task<bool> IsGrantedAsync(this IAuthorizationService authorizationService, string policyName)
         {
             return (await authorizationService.AuthorizeAsync(policyName)).Succeeded;
         }
 
-        public static bool IsGranted(this IAuthorizationService authorizationService, string policyName)
-        {
-            return authorizationService.Authorize(policyName).Succeeded;
-        }
-
         public static async Task<bool> IsGrantedAsync(this IAuthorizationService authorizationService, object resource, IAuthorizationRequirement requirement)
         {
             return (await authorizationService.AuthorizeAsync(resource, requirement)).Succeeded;
@@ -133,11 +97,6 @@ namespace Microsoft.AspNetCore.Authorization
             }
         }
 
-        public static void Check(this IAuthorizationService authorizationService, string policyName)
-        {
-            AsyncHelper.RunSync(() => authorizationService.CheckAsync(policyName));
-        }
-
         public static async Task CheckAsync(this IAuthorizationService authorizationService, object resource, IAuthorizationRequirement requirement)
         {
             if (!await authorizationService.IsGrantedAsync(resource, requirement))
diff --git a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ApplicationService.cs b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ApplicationService.cs
index 909ad40940..698f2c0ea3 100644
--- a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ApplicationService.cs
+++ b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ApplicationService.cs
@@ -124,20 +124,5 @@ namespace Volo.Abp.Application.Services
 
             await AuthorizationService.CheckAsync(policyName);
         }
-
-        /// <summary>
-        /// Checks for given <paramref name="policyName"/>.
-        /// Throws <see cref="AbpAuthorizationException"/> if given policy has not been granted.
-        /// </summary>
-        /// <param name="policyName">The policy name. This method does nothing if given <paramref name="policyName"/> is null or empty.</param>
-        protected virtual void CheckPolicy([CanBeNull] string policyName)
-        {
-            if (string.IsNullOrEmpty(policyName))
-            {
-                return;
-            }
-
-            AuthorizationService.Check(policyName);
-        }
     }
 }
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.UI.Navigation/Volo/Abp/Ui/Navigation/ApplicationMenuItem.cs b/framework/src/Volo.Abp.UI.Navigation/Volo/Abp/Ui/Navigation/ApplicationMenuItem.cs
index d3ed32be85..d4960c883e 100644
--- a/framework/src/Volo.Abp.UI.Navigation/Volo/Abp/Ui/Navigation/ApplicationMenuItem.cs
+++ b/framework/src/Volo.Abp.UI.Navigation/Volo/Abp/Ui/Navigation/ApplicationMenuItem.cs
@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using JetBrains.Annotations;
-using Volo.Abp.UI.Navigation;
 
 namespace Volo.Abp.UI.Navigation
 {