diff --git a/src/Umbraco.Core/Configuration/Models/GlobalSettings.cs b/src/Umbraco.Core/Configuration/Models/GlobalSettings.cs
index ada191a46b..45abc39268 100644
--- a/src/Umbraco.Core/Configuration/Models/GlobalSettings.cs
+++ b/src/Umbraco.Core/Configuration/Models/GlobalSettings.cs
@@ -24,15 +24,6 @@ namespace Umbraco.Cms.Core.Configuration.Models
         /// </summary>
         public string ReservedPaths { get; set; } = StaticReservedPaths;
 
-        /// <summary>
-        /// Gets or sets a value for the configuration status.
-        /// </summary>
-        /// <remarks>
-        /// TODO: https://github.com/umbraco/Umbraco-CMS/issues/4238 - stop having version in web.config appSettings
-        /// TODO: previously this would throw on set, but presumably we can't do that if we do still want this in config.
-        /// </remarks>
-        public string ConfigurationStatus { get; set; }
-
         /// <summary>
         /// Gets or sets a value for the timeout in minutes.
         /// </summary>
diff --git a/src/Umbraco.Core/Constants-AppSettings.cs b/src/Umbraco.Core/Constants-AppSettings.cs
deleted file mode 100644
index 1fd3720bb9..0000000000
--- a/src/Umbraco.Core/Constants-AppSettings.cs
+++ /dev/null
@@ -1,152 +0,0 @@
-using System;
-
-namespace Umbraco.Cms.Core
-{
-    public static partial class Constants
-    {
-        /// <summary>
-        /// Specific web.config AppSetting keys for Umbraco.Core application
-        /// </summary>
-        public static class AppSettings
-        {
-            // TODO: Are these all obsolete in netcore now?
-
-            public const string MainDomLock = "Umbraco.Core.MainDom.Lock";
-
-            // TODO: Kill me - still used in Umbraco.Core.IO.SystemFiles:27
-            [Obsolete("We need to kill this appsetting as we do not use XML content cache umbraco.config anymore due to NuCache")]
-            public const string ContentXML = "Umbraco.Core.ContentXML"; //umbracoContentXML
-
-            /// <summary>
-            /// TODO: FILL ME IN
-            /// </summary>
-            public const string RegisterType = "Umbraco.Core.RegisterType";
-
-            /// <summary>
-            /// This is used for a unit test in PublishedMediaCache
-            /// </summary>
-            public const string PublishedMediaCacheSeconds = "Umbraco.Core.PublishedMediaCacheSeconds";
-
-            /// <summary>
-            /// TODO: FILL ME IN
-            /// </summary>
-            public const string AssembliesAcceptingLoadExceptions = "Umbraco.Core.AssembliesAcceptingLoadExceptions";
-
-            /// <summary>
-            /// This will return the version number of the currently installed umbraco instance
-            /// </summary>
-            /// <remarks>
-            /// Umbraco will automatically set & modify this value when installing & upgrading
-            /// </remarks>
-            public const string ConfigurationStatus = "Umbraco.Core.ConfigurationStatus";
-
-            /// <summary>
-            /// The path to umbraco's root directory (/umbraco by default).
-            /// </summary>
-            public const string UmbracoPath = "Umbraco.Core.Path";
-
-            /// <summary>
-            /// Gets the path to umbraco's icons directory (/umbraco/assets/icons by default).
-            /// </summary>
-            public const string IconsPath = "Umbraco.Icons.Path";
-
-            /// <summary>
-            /// The reserved urls from web.config.
-            /// </summary>
-            public const string ReservedUrls = "Umbraco.Core.ReservedUrls";
-
-            /// <summary>
-            /// The path of the stylesheet folder.
-            /// </summary>
-            public const string UmbracoCssPath = "Umbraco.Web.CssPath";
-
-            /// <summary>
-            /// The path of script folder.
-            /// </summary>
-            public const string UmbracoScriptsPath = "Umbraco.Core.ScriptsPath";
-
-            /// <summary>
-            /// The path of media folder.
-            /// </summary>
-            public const string UmbracoMediaPath = "Umbraco.Core.MediaPath";
-
-            /// <summary>
-            /// The reserved paths from web.config
-            /// </summary>
-            public const string ReservedPaths = "Umbraco.Core.ReservedPaths";
-
-            /// <summary>
-            /// Set the timeout for the Umbraco backoffice in minutes
-            /// </summary>
-            public const string TimeOutInMinutes = "Umbraco.Core.TimeOutInMinutes";
-
-            /// <summary>
-            /// The number of days to check for a new version of Umbraco
-            /// </summary>
-            /// <remarks>
-            /// Default is set to 7. Setting this to 0 will never check
-            /// This is used to help track statistics
-            /// </remarks>
-            public const string VersionCheckPeriod = "Umbraco.Core.VersionCheckPeriod";
-
-            /// <summary>
-            /// This is the location type to store temporary files such as cache files or other localized files for a given machine
-            /// </summary>
-            /// <remarks>
-            /// Currently used for the xml cache file and the plugin cache files
-            /// </remarks>
-            public const string LocalTempStorage = "Umbraco.Core.LocalTempStorage";
-
-            /// <summary>
-            /// The default UI language of the backoffice such as 'en-US'
-            /// </summary>
-            public const string DefaultUILanguage = "Umbraco.Core.DefaultUILanguage";
-
-            /// <summary>
-            /// A true/false value indicating whether umbraco should hide top level nodes from generated URLs.
-            /// </summary>
-            public const string HideTopLevelNodeFromPath = "Umbraco.Core.HideTopLevelNodeFromPath";
-
-            /// <summary>
-            /// A true or false indicating whether umbraco should force a secure (https) connection to the backoffice.
-            /// </summary>
-            public const string UseHttps = "Umbraco.Core.UseHttps";
-
-            /// <summary>
-            /// TODO: FILL ME IN
-            /// </summary>
-            public const string DisableElectionForSingleServer = "Umbraco.Core.DisableElectionForSingleServer";
-
-            /// <summary>
-            /// Gets the path to the razor file used when no published content is available.
-            /// </summary>
-            public const string NoNodesViewPath = "Umbraco.Core.NoNodesViewPath";
-
-            /// <summary>
-            /// Debug specific web.config AppSetting keys for Umbraco
-            /// </summary>
-            /// <remarks>
-            /// Do not use these keys in a production environment
-            /// </remarks>
-            public static class Debug
-            {
-                /// <summary>
-                /// When set to true, Scope logs the stack trace for any scope that gets disposed without being completed.
-                /// this helps troubleshooting rogue scopes that we forget to complete
-                /// </summary>
-                public const string LogUncompletedScopes = "Umbraco.Core.Debug.LogUncompletedScopes";
-
-                /// <summary>
-                /// When set to true, the Logger creates a mini dump of w3wp in ~/App_Data/MiniDump whenever it logs
-                /// an error due to a ThreadAbortException that is due to a timeout.
-                /// </summary>
-                public const string DumpOnTimeoutThreadAbort = "Umbraco.Core.Debug.DumpOnTimeoutThreadAbort";
-
-                /// <summary>
-                /// TODO: FILL ME IN
-                /// </summary>
-                public const string DatabaseFactoryServerVersion = "Umbraco.Core.Debug.DatabaseFactoryServerVersion";
-            }
-        }
-    }
-}
diff --git a/src/Umbraco.Tests/LegacyXmlPublishedCache/PublishedMediaCache.cs b/src/Umbraco.Tests/LegacyXmlPublishedCache/PublishedMediaCache.cs
index 8536c2ce33..0db61264ee 100644
--- a/src/Umbraco.Tests/LegacyXmlPublishedCache/PublishedMediaCache.cs
+++ b/src/Umbraco.Tests/LegacyXmlPublishedCache/PublishedMediaCache.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Configuration;
 using System.IO;
@@ -636,19 +636,8 @@ namespace Umbraco.Tests.LegacyXmlPublishedCache
 
         private static void InitializeCacheConfig()
         {
-            var value = ConfigurationManager.AppSettings[Constants.AppSettings.PublishedMediaCacheSeconds];
-            int seconds;
-            if (int.TryParse(value, out seconds) == false)
-                seconds = PublishedMediaCacheTimespanSeconds;
-            if (seconds > 0)
-            {
-                _publishedMediaCacheEnabled = true;
-                _publishedMediaCacheTimespan = TimeSpan.FromSeconds(seconds);
-            }
-            else
-            {
-                _publishedMediaCacheEnabled = false;
-            }
+            _publishedMediaCacheEnabled = true;
+            _publishedMediaCacheTimespan = TimeSpan.FromSeconds(PublishedMediaCacheTimespanSeconds);
         }
 
         internal IPublishedContent CreateFromCacheValues(CacheValues cacheValues)