diff --git a/Examples/CMakeNinjaHelloWorld/config.dsc b/Examples/CMakeNinjaHelloWorld/config.dsc
index bf5e38e10..33e45cb1c 100644
--- a/Examples/CMakeNinjaHelloWorld/config.dsc
+++ b/Examples/CMakeNinjaHelloWorld/config.dsc
@@ -5,8 +5,5 @@ config({
             root: d`.`,
             moduleName: "CMakeNinjaProject",
         }
-    ],
-    
-    // Inbox SDK is not currently working with the CMake resolver
-    disableInBoxSdkSourceResolver: true,
+    ]
 });
\ No newline at end of file
diff --git a/Examples/NinjaHelloWorld/config.dsc b/Examples/NinjaHelloWorld/config.dsc
index 5af284ffa..71aa66a1a 100644
--- a/Examples/NinjaHelloWorld/config.dsc
+++ b/Examples/NinjaHelloWorld/config.dsc
@@ -6,8 +6,5 @@ config({
             moduleName: "HelloWorld",
             keepProjectGraphFile: true,
         }
-    ],
-    
-    // Inbox SDK is not currently working with the Ninja resolver
-    disableInBoxSdkSourceResolver: true,
+    ]
 });
\ No newline at end of file
diff --git a/Public/Src/FrontEnd/Core/FrontEndHostController.cs b/Public/Src/FrontEnd/Core/FrontEndHostController.cs
index 712ea3a36..237ddb969 100644
--- a/Public/Src/FrontEnd/Core/FrontEndHostController.cs
+++ b/Public/Src/FrontEnd/Core/FrontEndHostController.cs
@@ -1267,11 +1267,11 @@ namespace BuildXL.FrontEnd.Core
             AbsolutePath configFilePath = configuration.Layout.PrimaryConfigFile;
             var resolverSettings = new List<IResolverSettings>();
 
+            var resolverNames = new HashSet<string>();
             if (configuration.Resolvers != null)
             {
                 // Ensure all resolvers have a name.
                 int i = 0;
-                var resolverNames = new HashSet<string>();
                 foreach (var resolver in configuration.Resolvers)
                 {
                     if (!string.IsNullOrEmpty(resolver.Name))
@@ -1311,9 +1311,13 @@ namespace BuildXL.FrontEnd.Core
 
             // If configured, add an implicit DScript resolver that owns all in-box SDKs deployed
             // alongside bxl binaries
-            if (TryCreateInBoxSDKResolver(configFilePath, out IDScriptResolverSettings settings))
+            // The Ninja resolver is incompatible with the inbox SDK resolver so we disable it by default - see work item #1830391
+            if (!resolverNames.Contains(KnownResolverKind.NinjaResolverKind))
             {
-                resolverSettings.Add(settings);
+                if (TryCreateInBoxSDKResolver(configFilePath, out IDScriptResolverSettings settings))
+                {
+                    resolverSettings.Add(settings);
+                }
             }
 
             if (!existExplicitDefaultSourceResolver)