diff --git a/src/Jackett.Common/Indexers/BaseIndexer.cs b/src/Jackett.Common/Indexers/BaseIndexer.cs
index 05a1fab6f..7ec14993a 100644
--- a/src/Jackett.Common/Indexers/BaseIndexer.cs
+++ b/src/Jackett.Common/Indexers/BaseIndexer.cs
@@ -177,13 +177,6 @@ namespace Jackett.Common.Indexers
         //TODO: Remove this section once users have moved off DPAPI
         private bool MigratedFromDPAPI(JToken jsonConfig)
         {
-            if (EnvironmentUtil.IsRunningLegacyOwin)
-            {
-                //Still running legacy Owin and using the DPAPI, we don't want to migrate
-                logger.Debug(ID + " - Running Owin, no need to migrate from DPAPI");
-                return false;
-            }
-
             bool runningOnDotNetCore = RuntimeInformation.FrameworkDescription.IndexOf("core", StringComparison.OrdinalIgnoreCase) >= 0;
             bool isWindows = Environment.OSVersion.Platform == PlatformID.Win32NT;
 
diff --git a/src/Jackett.Common/Models/Config/ConsoleOptions.cs b/src/Jackett.Common/Models/Config/ConsoleOptions.cs
index 9415b4997..def0fc8c7 100644
--- a/src/Jackett.Common/Models/Config/ConsoleOptions.cs
+++ b/src/Jackett.Common/Models/Config/ConsoleOptions.cs
@@ -84,16 +84,7 @@ namespace Jackett.Common.Models.Config
             if (options.ListenPublic && options.ListenPrivate)
             {
                 Console.WriteLine("You can only use listen private OR listen publicly.");
-                
-                //TODO: Remove once off Owin
-                if (EnvironmentUtil.IsRunningLegacyOwin)
-                {
-                    Engine.Exit(1);
-                }
-                else
-                {
-                    Environment.Exit(1);
-                }
+                Environment.Exit(1);
             }
 
             // SSL Fix
diff --git a/src/Jackett.Common/Plumbing/JackettModule.cs b/src/Jackett.Common/Plumbing/JackettModule.cs
index bbf6883d3..f1f2a2854 100644
--- a/src/Jackett.Common/Plumbing/JackettModule.cs
+++ b/src/Jackett.Common/Plumbing/JackettModule.cs
@@ -71,11 +71,6 @@ namespace Jackett.Common.Plumbing
 
         private void RegisterWebClient<WebClientType>(ContainerBuilder builder)
         {
-            //TODO: Remove once off Owin
-            if (EnvironmentUtil.IsRunningLegacyOwin)
-            {
-                Engine.WebClientType = typeof(WebClientType);
-            }
             builder.RegisterType<WebClientType>().As<WebClient>();
         }
 
diff --git a/src/Jackett.Common/Services/UpdateService.cs b/src/Jackett.Common/Services/UpdateService.cs
index 065ff2a24..a61b04090 100644
--- a/src/Jackett.Common/Services/UpdateService.cs
+++ b/src/Jackett.Common/Services/UpdateService.cs
@@ -338,16 +338,7 @@ namespace Jackett.Common.Services
                 }
 
                 logger.Info("Exiting Jackett..");
-
-                //TODO: Remove once off Owin
-                if (EnvironmentUtil.IsRunningLegacyOwin)
-                {
-                    Engine.Exit(0);
-                }
-                else
-                {
-                    Environment.Exit(0);
-                }
+                Environment.Exit(0);
             }
         }
     }
diff --git a/src/Jackett.Common/Utils/EnvironmentUtil.cs b/src/Jackett.Common/Utils/EnvironmentUtil.cs
index 385d5bbdd..487a324dd 100644
--- a/src/Jackett.Common/Utils/EnvironmentUtil.cs
+++ b/src/Jackett.Common/Utils/EnvironmentUtil.cs
@@ -24,23 +24,5 @@ namespace Jackett.Common.Utils
             }
         }
 
-        public static bool IsRunningLegacyOwin
-        {
-            get
-            {
-                bool runningOwin;
-
-                try
-                {
-                    runningOwin = AppDomain.CurrentDomain.GetAssemblies().Where(x => x.FullName.StartsWith("Jackett, ")).Any();
-                }
-                catch
-                {
-                    runningOwin = true;
-                }
-
-                return runningOwin;
-            }
-        }
     }
 }