From 51919cb631f62040506266b46b19bc7a4d241d43 Mon Sep 17 00:00:00 2001
From: Hao Kung <HaoK@users.noreply.github.com>
Date: Tue, 18 Jun 2019 23:30:47 -0700
Subject: [PATCH] Improve error message when no auth scheme specified (#11348)

---
 .../Authentication.Core/src/AuthenticationService.cs   | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Http/Authentication.Core/src/AuthenticationService.cs b/src/Http/Authentication.Core/src/AuthenticationService.cs
index bf10f47adf..7efce69ce8 100644
--- a/src/Http/Authentication.Core/src/AuthenticationService.cs
+++ b/src/Http/Authentication.Core/src/AuthenticationService.cs
@@ -64,7 +64,7 @@ namespace Microsoft.AspNetCore.Authentication
                 scheme = defaultScheme?.Name;
                 if (scheme == null)
                 {
-                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultAuthenticateScheme found.");
+                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultAuthenticateScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).");
                 }
             }
 
@@ -98,7 +98,7 @@ namespace Microsoft.AspNetCore.Authentication
                 scheme = defaultChallengeScheme?.Name;
                 if (scheme == null)
                 {
-                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultChallengeScheme found.");
+                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultChallengeScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).");
                 }
             }
 
@@ -126,7 +126,7 @@ namespace Microsoft.AspNetCore.Authentication
                 scheme = defaultForbidScheme?.Name;
                 if (scheme == null)
                 {
-                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultForbidScheme found.");
+                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultForbidScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).");
                 }
             }
 
@@ -172,7 +172,7 @@ namespace Microsoft.AspNetCore.Authentication
                 scheme = defaultScheme?.Name;
                 if (scheme == null)
                 {
-                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultSignInScheme found.");
+                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultSignInScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).");
                 }
             }
 
@@ -206,7 +206,7 @@ namespace Microsoft.AspNetCore.Authentication
                 scheme = defaultScheme?.Name;
                 if (scheme == null)
                 {
-                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultSignOutScheme found.");
+                    throw new InvalidOperationException($"No authenticationScheme was specified, and there was no DefaultSignOutScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).");
                 }
             }