diff --git a/samples/CookieSample/Startup.cs b/samples/CookieSample/Startup.cs
index b3327ac81c..64376e26e9 100644
--- a/samples/CookieSample/Startup.cs
+++ b/samples/CookieSample/Startup.cs
@@ -46,6 +46,7 @@ namespace CookieSample
         {
             var application = new WebApplicationBuilder()
                 .UseConfiguration(WebApplicationConfiguration.GetDefault(args))
+                .UseIISPlatformHandlerUrl()
                 .UseStartup<Startup>()
                 .Build();
 
diff --git a/samples/CookieSessionSample/Startup.cs b/samples/CookieSessionSample/Startup.cs
index 6160f56b95..d9504d942a 100644
--- a/samples/CookieSessionSample/Startup.cs
+++ b/samples/CookieSessionSample/Startup.cs
@@ -56,6 +56,7 @@ namespace CookieSessionSample
         {
             var application = new WebApplicationBuilder()
                 .UseConfiguration(WebApplicationConfiguration.GetDefault(args))
+                .UseIISPlatformHandlerUrl()
                 .UseStartup<Startup>()
                 .Build();
 
diff --git a/samples/JwtBearerSample/Startup.cs b/samples/JwtBearerSample/Startup.cs
index db91629bcf..abfd83735f 100644
--- a/samples/JwtBearerSample/Startup.cs
+++ b/samples/JwtBearerSample/Startup.cs
@@ -116,6 +116,7 @@ namespace JwtBearerSample
         {
             var application = new WebApplicationBuilder()
                 .UseConfiguration(WebApplicationConfiguration.GetDefault(args))
+                .UseIISPlatformHandlerUrl()
                 .UseStartup<Startup>()
                 .Build();
 
diff --git a/samples/OpenIdConnectSample/Startup.cs b/samples/OpenIdConnectSample/Startup.cs
index bf4a4bc759..50452d1730 100644
--- a/samples/OpenIdConnectSample/Startup.cs
+++ b/samples/OpenIdConnectSample/Startup.cs
@@ -69,6 +69,7 @@ namespace OpenIdConnectSample
         {
             var application = new WebApplicationBuilder()
                 .UseConfiguration(WebApplicationConfiguration.GetDefault(args))
+                .UseIISPlatformHandlerUrl()
                 .UseStartup<Startup>()
                 .Build();
 
diff --git a/samples/SocialSample/Properties/launchSettings.json b/samples/SocialSample/Properties/launchSettings.json
index b10006b86c..15c91efdcb 100644
--- a/samples/SocialSample/Properties/launchSettings.json
+++ b/samples/SocialSample/Properties/launchSettings.json
@@ -10,6 +10,7 @@
   "profiles": {
     "IIS Express": {
       "commandName": "IISExpress",
+      "launchBrowser": true,
       "environmentVariables": {
         "ASPNET_ENV": "Development"
       }
diff --git a/samples/SocialSample/Startup.cs b/samples/SocialSample/Startup.cs
index 65067ada8e..e466c019d4 100644
--- a/samples/SocialSample/Startup.cs
+++ b/samples/SocialSample/Startup.cs
@@ -6,7 +6,6 @@ using System.Security.Claims;
 using System.Text.Encodings.Web;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Authentication.Cookies;
-using Microsoft.AspNet.Authentication.Facebook;
 using Microsoft.AspNet.Authentication.Google;
 using Microsoft.AspNet.Authentication.MicrosoftAccount;
 using Microsoft.AspNet.Authentication.OAuth;
@@ -328,6 +327,7 @@ namespace CookieSample
         {
             var application = new WebApplicationBuilder()
                 .UseConfiguration(WebApplicationConfiguration.GetDefault(args))
+                .UseIISPlatformHandlerUrl()
                 .UseStartup<Startup>()
                 .Build();