diff --git a/samples/CookieSample/Program.cs b/samples/CookieSample/Program.cs
index cd8aab3aee..df74352e7c 100644
--- a/samples/CookieSample/Program.cs
+++ b/samples/CookieSample/Program.cs
@@ -8,11 +8,8 @@ namespace CookieSample
     {
         public static void Main(string[] args)
         {
-            var config = new ConfigurationBuilder().AddEnvironmentVariables("ASPNETCORE_").Build();
-
             var host = new WebHostBuilder()
                 .UseKestrel()
-                .UseConfiguration(config)
                 .UseContentRoot(Directory.GetCurrentDirectory())
                 .UseIISIntegration()
                 .UseStartup<Startup>()
diff --git a/samples/CookieSample/Properties/launchSettings.json b/samples/CookieSample/Properties/launchSettings.json
index 75da70bee0..afe862f4f4 100644
--- a/samples/CookieSample/Properties/launchSettings.json
+++ b/samples/CookieSample/Properties/launchSettings.json
@@ -21,7 +21,7 @@
       "launchUrl": "http://localhost:12345",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development",
-        "ASPNETCORE_SERVER.URLS": "http://localhost:12345"
+        "ASPNETCORE_URLS": "http://localhost:12345"
       }
     }
   }
diff --git a/samples/CookieSessionSample/Program.cs b/samples/CookieSessionSample/Program.cs
index 6b9014f5e9..adf8f1f1a4 100644
--- a/samples/CookieSessionSample/Program.cs
+++ b/samples/CookieSessionSample/Program.cs
@@ -8,11 +8,8 @@ namespace CookieSessionSample
     {
         public static void Main(string[] args)
         {
-            var config = new ConfigurationBuilder().AddEnvironmentVariables("ASPNETCORE_").Build();
-
             var host = new WebHostBuilder()
                 .UseKestrel()
-                .UseConfiguration(config)
                 .UseContentRoot(Directory.GetCurrentDirectory())
                 .UseIISIntegration()
                 .UseStartup<Startup>()
diff --git a/samples/CookieSessionSample/Properties/launchSettings.json b/samples/CookieSessionSample/Properties/launchSettings.json
index 15b478a0ed..edb6e4dd19 100644
--- a/samples/CookieSessionSample/Properties/launchSettings.json
+++ b/samples/CookieSessionSample/Properties/launchSettings.json
@@ -21,7 +21,7 @@
       "launchUrl": "http://localhost:12345",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development",
-        "ASPNETCORE_SERVER.URLS": "http://localhost:12345"
+        "ASPNETCORE_URLS": "http://localhost:12345"
       }
     }
   }
diff --git a/samples/JwtBearerSample/Program.cs b/samples/JwtBearerSample/Program.cs
index 82da93d591..44d2fe0c4f 100644
--- a/samples/JwtBearerSample/Program.cs
+++ b/samples/JwtBearerSample/Program.cs
@@ -8,11 +8,8 @@ namespace JwtBearerSample
     {
         public static void Main(string[] args)
         {
-            var config = new ConfigurationBuilder().AddEnvironmentVariables("ASPNETCORE_").Build();
-
             var host = new WebHostBuilder()
                 .UseKestrel()
-                .UseConfiguration(config)
                 .UseContentRoot(Directory.GetCurrentDirectory())
                 .UseIISIntegration()
                 .UseStartup<Startup>()
diff --git a/samples/JwtBearerSample/Properties/launchSettings.json b/samples/JwtBearerSample/Properties/launchSettings.json
index f5dfcd0181..e89788c48f 100644
--- a/samples/JwtBearerSample/Properties/launchSettings.json
+++ b/samples/JwtBearerSample/Properties/launchSettings.json
@@ -21,7 +21,7 @@
       "launchUrl": "http://localhost:42023",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development",
-        "ASPNETCORE_SERVER.URLS": "http://localhost:42023"
+        "ASPNETCORE_URLS": "http://localhost:42023"
       }
     }
   }
diff --git a/samples/SocialSample/Properties/launchSettings.json b/samples/SocialSample/Properties/launchSettings.json
index 9224a4881c..251bfbffd4 100644
--- a/samples/SocialSample/Properties/launchSettings.json
+++ b/samples/SocialSample/Properties/launchSettings.json
@@ -22,7 +22,7 @@
       "launchUrl": "https://localhost:44318/",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development",
-        "ASPNETCORE_SERVER.URLS": "https://localhost:44318/"
+        "ASPNETCORE_URLS": "https://localhost:44318/"
       }
     }
   }