diff --git a/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs b/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs
index db0ea4f977..bb23757de5 100644
--- a/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs
+++ b/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs
@@ -19,7 +19,7 @@ namespace Volo.Abp.Authorization.Permissions
         public PermissionDefinition Parent { get; private set; }
 
         /// <summary>
-        /// A list of allowed providers to get value of this permission.
+        /// A list of allowed providers to get/set value of this permission.
         /// An empty list indicates that all providers are allowed.
         /// </summary>
         public List<string> Providers { get; }
diff --git a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/ISettingManager.cs b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/ISettingManager.cs
index 9c794a2c9b..bd0b5c7d20 100644
--- a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/ISettingManager.cs
+++ b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/ISettingManager.cs
@@ -6,12 +6,8 @@ namespace Volo.Abp.Settings
 {
     public interface ISettingManager
     {
-        Task<string> GetOrNullAsync([NotNull]string name);
-
         Task<string> GetOrNullAsync([NotNull]string name, [NotNull] string providerName, [CanBeNull] string providerKey, bool fallback = true);
 
-        Task<List<SettingValue>> GetAllAsync();
-
         Task<List<SettingValue>> GetAllAsync([NotNull] string providerName, [CanBeNull] string providerKey, bool fallback = true);
 
         Task SetAsync([NotNull] string name, [CanBeNull] string value, [NotNull] string providerName, [CanBeNull] string providerKey, bool forceToSet = false);
diff --git a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs
index 1563de3291..9f02389248 100644
--- a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs
+++ b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs
@@ -37,7 +37,7 @@ namespace Volo.Abp.Settings
         public bool IsVisibleToClients { get; set; }
 
         /// <summary>
-        /// A list of allowed providers to get value of this permission.
+        /// A list of allowed providers to get/set value of this setting.
         /// An empty list indicates that all providers are allowed.
         /// </summary>
         public List<string> Providers { get; }
diff --git a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManager.cs b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManager.cs
index 33087bab77..fffa1021a9 100644
--- a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManager.cs
+++ b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManager.cs
@@ -33,14 +33,7 @@ namespace Volo.Abp.Settings
                 true
             );
         }
-
-        public virtual Task<string> GetOrNullAsync(string name)
-        {
-            Check.NotNull(name, nameof(name));
-
-            return GetOrNullInternalAsync(name, null, null);
-        }
-
+        
         public virtual Task<string> GetOrNullAsync(string name, string providerName, string providerKey, bool fallback = true)
         {
             Check.NotNull(name, nameof(name));
@@ -49,31 +42,6 @@ namespace Volo.Abp.Settings
             return GetOrNullInternalAsync(name, providerName, providerKey, fallback);
         }
 
-        public virtual async Task<List<SettingValue>> GetAllAsync()
-        {
-            var settingValues = new Dictionary<string, SettingValue>();
-            var settingDefinitions = SettingDefinitionManager.GetAll();
-
-            foreach (var provider in Providers.Value)
-            {
-                foreach (var setting in settingDefinitions)
-                {
-                    var value = await provider.GetOrNullAsync(setting, null);
-                    if (value != null)
-                    {
-                        if (setting.IsEncrypted)
-                        {
-                            value = SettingEncryptionService.Decrypt(setting, value);
-                        }
-
-                        settingValues[setting.Name] = new SettingValue(setting.Name, value);
-                    }
-                }
-            }
-
-            return settingValues.Values.ToList();
-        }
-
         public virtual async Task<List<SettingValue>> GetAllAsync(string providerName, string providerKey, bool fallback = true)
         {
             Check.NotNull(providerName, nameof(providerName));
diff --git a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManagerExtensions.cs b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManagerExtensions.cs
deleted file mode 100644
index d9f4f3950b..0000000000
--- a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManagerExtensions.cs
+++ /dev/null
@@ -1,31 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using JetBrains.Annotations;
-
-namespace Volo.Abp.Settings
-{
-    public static class SettingManagerExtensions
-    {
-        public static async Task<bool> IsTrueAsync([NotNull] this ISettingManager settingManager, [NotNull] string name)
-        {
-            Check.NotNull(settingManager, nameof(settingManager));
-            Check.NotNull(name, nameof(name));
-
-            return string.Equals(
-                await settingManager.GetOrNullAsync(name),
-                "true",
-                StringComparison.OrdinalIgnoreCase
-            );
-        }
-
-        public static async Task<T> GetAsync<T>([NotNull] this ISettingManager settingManager, [NotNull] string name, T defaultValue = default) 
-            where T : struct
-        {
-            Check.NotNull(settingManager, nameof(settingManager));
-            Check.NotNull(name, nameof(name));
-
-            var value = await settingManager.GetOrNullAsync(name);
-            return value?.To<T>() ?? defaultValue;
-        }
-    }
-}
\ No newline at end of file
diff --git a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManagerSyncExtensions.cs b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManagerSyncExtensions.cs
deleted file mode 100644
index e5d31bd16c..0000000000
--- a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingManagerSyncExtensions.cs
+++ /dev/null
@@ -1,34 +0,0 @@
-using System.Collections.Generic;
-using JetBrains.Annotations;
-using Volo.Abp.Threading;
-
-namespace Volo.Abp.Settings
-{
-    public static class SettingManagerSyncExtensions
-    {
-        public static string GetOrNull([NotNull] this ISettingManager settingManager, [NotNull] string name)
-        {
-            Check.NotNull(settingManager, nameof(settingManager));
-
-            return AsyncHelper.RunSync(() => settingManager.GetOrNullAsync(name));
-        }
-
-        public static List<SettingValue> GetAll([NotNull] this ISettingManager settingManager)
-        {
-            Check.NotNull(settingManager, nameof(settingManager));
-
-            return AsyncHelper.RunSync(settingManager.GetAllAsync);
-        }
-
-        public static T Get<T>([NotNull] this ISettingManager settingManager, [NotNull] string name, T defaultValue = default)
-            where T : struct
-        {
-            return AsyncHelper.RunSync(() => settingManager.GetAsync(name, defaultValue));
-        }
-
-        public static bool IsTrue([NotNull] this ISettingManager settingManager, [NotNull] string name)
-        {
-            return AsyncHelper.RunSync(() => settingManager.IsTrueAsync(name));
-        }
-    }
-}
diff --git a/framework/test/Volo.Abp.Settings.Tests/Volo/Abp/Settings/SettingManager_Tests.cs b/framework/test/Volo.Abp.Settings.Tests/Volo/Abp/Settings/SettingManager_Tests.cs
deleted file mode 100644
index 82231b8318..0000000000
--- a/framework/test/Volo.Abp.Settings.Tests/Volo/Abp/Settings/SettingManager_Tests.cs
+++ /dev/null
@@ -1,53 +0,0 @@
-using System.Threading.Tasks;
-using Shouldly;
-using Xunit;
-
-namespace Volo.Abp.Settings
-{
-    public class SettingManager_Tests : AbpIntegratedTest<AbpSettingsTestModule>
-    {
-        private readonly ISettingManager _settingManager;
-
-        public SettingManager_Tests()
-        {
-            _settingManager = GetRequiredService<ISettingManager>();
-        }
-
-        [Fact]
-        public async Task Should_Get_Null_If_No_Value_Provided_And_No_Default_Value()
-        {
-            (await _settingManager.GetOrNullAsync(TestSettingNames.TestSettingWithoutDefaultValue))
-                .ShouldBeNull();
-        }
-
-        [Fact]
-        public async Task Should_Get_Default_Value_If_No_Value_Provided_And_There_Is_A_Default_Value()
-        {
-            (await _settingManager.GetOrNullAsync(TestSettingNames.TestSettingWithDefaultValue))
-                .ShouldBe("default-value");
-        }
-
-        [Theory]
-        [InlineData(null)]
-        [InlineData("")]
-        [InlineData("abc")]
-        [InlineData("This is a relatively long text... This is a relatively long text... This is a relatively long text... ")]
-        public async Task Should_Set_And_Get_Encrypted_Values(string plainValue)
-        {
-            (await _settingManager.GetOrNullAsync(TestSettingNames.TestSettingEncrypted))
-                .ShouldBeNull();
-
-            await _settingManager.SetAsync(
-                TestSettingNames.TestSettingEncrypted,
-                plainValue,
-                TestSettingValueProvider.ProviderName,
-                null
-            );
-
-            (await _settingManager.GetOrNullAsync(TestSettingNames.TestSettingEncrypted))
-                .ShouldBe(plainValue);
-        }
-
-        //TODO: Needs more tests with more advanced scenarios.
-    }
-}