Skip the Auth login step, which is only for linked Epic accounts. We can go straight to the Connect interface with our Xbox Live XSTS token.

Assets/Scripts/MagnificentVoiceChat.cs

@@ -203,18 +203,27 @@ public class MagnificentVoiceChat : MonoBehaviour
             }
 
             status.AppendLine("Xbox user added");
-            SDK.XUserGetTokenAndSignatureUtf16Async(userHandle, XUserGetTokenAndSignatureOptions.ForceRefresh,
+            SDK.XUserGetTokenAndSignatureUtf16Async(userHandle, XUserGetTokenAndSignatureOptions.None,
                 "GET", "https://api.epicgames.dev/", null, null, HandleTokenAndSignature);
         });
         
         yield return new WaitUntil(() => !string.IsNullOrEmpty(xstsToken));
-#endif
 
+        connectInterface.Login(new Epic.OnlineServices.Connect.LoginOptions
+        {
+            Credentials = new Epic.OnlineServices.Connect.Credentials
+            {
+                Type = ExternalCredentialType.XblXstsToken,
+                Token = xstsToken,
+            },
+        }, null, HandleConnectResult);
+#else
         authInterface.Login(new LoginOptions
         {
             Credentials = GetEpicCredentials(),
             ScopeFlags = AuthScopeFlags.BasicProfile,
         }, null, HandleLoginResult);
+#endif
     }
     
 #if UNITY_GAMECORE
@@ -231,11 +240,9 @@ public class MagnificentVoiceChat : MonoBehaviour
         status.AppendLine("Xbox Live successfully authenticated");
         xstsToken = tokenAndSignature.Token;
     }
-#endif
-
-    private Credentials GetEpicCredentials()    // This is platform-specific
+#else
+    private Credentials GetEpicCredentials()    // This is platform-specific (actually it's not, we can skip this on consoles)
     {
-#if UNITY_STANDALONE
         return new Credentials
         {
             // Type = LoginCredentialType.AccountPortal,  // Use ExternalAuth on console platform
@@ -243,15 +250,6 @@ public class MagnificentVoiceChat : MonoBehaviour
             Type = LoginCredentialType.Developer,
             Token = SystemInfo.deviceName,
         };
-#elif UNITY_GAMECORE
-        return new Credentials
-        {
-            Type = LoginCredentialType.ExternalAuth,
-            ExternalType = ExternalCredentialType.XblXstsToken,
-            Token = xstsToken,
-        };
-#elif UNITY_PS4 || UNITY_PS5
-#endif
     }
 
     private void HandleLoginResult(LoginCallbackInfo data)
@@ -268,20 +266,11 @@ public class MagnificentVoiceChat : MonoBehaviour
                 
                 connectInterface.Login(new Epic.OnlineServices.Connect.LoginOptions
                 {
-#if UNITY_STANDALONE
                     Credentials = new Epic.OnlineServices.Connect.Credentials
                     {
                         Type = ExternalCredentialType.Epic, // Can be XSTS or PSN ID as well, platform-specific
                         Token = token.AccessToken,
                     },
-#elif UNITY_GAMECORE
-                    Credentials = new Epic.OnlineServices.Connect.Credentials
-                    {
-                        Type = ExternalCredentialType.XblXstsToken, // Isn't this kinda redundant? Should we be logging in to our Epic account here?
-                        Token = xstsToken,
-                    },
-#elif UNITY_PS4 || UNITY_PS5
-#endif
                 }, null, HandleConnectResult);
                 break;
             default:
@@ -290,6 +279,7 @@ public class MagnificentVoiceChat : MonoBehaviour
                 break;
         }
     }
+#endif
 
     private void HandleConnectResult(Epic.OnlineServices.Connect.LoginCallbackInfo data)
     {