diff --git a/build/nuke_build/Build.cs b/build/nuke_build/Build.cs
index 480bcac2..ef736dcf 100644
--- a/build/nuke_build/Build.cs
+++ b/build/nuke_build/Build.cs
@@ -222,7 +222,7 @@ class Build : NukeBuild
         .DependsOn(Prerequisites)
         .Executes(() =>
     {
-        foreach (var platform in ServiceAndApiPlatforms)
+        foreach (var platform in ServiceAndApiPlatformsAll)
         {
             string solutionDir = ApiSolutionFolder.ToString() + @"\";
 
@@ -251,11 +251,14 @@ class Build : NukeBuild
             // copy binaries to staging folder
             var stagingFiles = new List<AbsolutePath>();
 
+            // This abstraction gets compiled to Arm64X and x64. The Arm64X output is in the Arm64EC folder
+       //     var midiSrvAbstractionPlatform = (platform == "Arm64EC" || platform == "Arm64") ? "Arm64EC" : "x64";
             stagingFiles.Add(ApiSolutionFolder / "vsfiles" / platform / Configuration.Release / $"Midi2.MidiSrvAbstraction.dll");
 
-            // only in-proc files, like the MidiSrvAbstraction, are Arm64EC
-            //var servicePlatform = (platform == "Arm64EC" || platform == "Arm64") ? "Arm64" : "x64";
-            var servicePlatform = platform;
+
+            // only in-proc files, like the MidiSrvAbstraction, are Arm64EC. For all the others
+            // any reference to Arm64EC is just Arm64. We don't use any of the Arm64X output
+            var servicePlatform = (platform == "Arm64EC" || platform == "Arm64") ? "Arm64" : "x64";
 
             stagingFiles.Add(ApiSolutionFolder / "vsfiles" / servicePlatform / Configuration.Release / $"Midisrv.exe");
 
@@ -461,9 +464,10 @@ class Build : NukeBuild
             {
                 string sourcePlatform;
 
+                // the solution compiles these apps to x64 when target is EC.
                 if (targetPlatform.ToLower() == "arm64ec")
                 {
-                    sourcePlatform = "Arm64";
+                    sourcePlatform = "x64";
                 }
                 else
                 {
@@ -479,7 +483,6 @@ class Build : NukeBuild
 
                 // sample manifest
                 FileSystemTasks.CopyFileToDirectory(AppSdkSolutionFolder / "ExampleMidiApp.exe.manifest", AppSdkStagingFolder / targetPlatform, FileExistsPolicy.Overwrite, true);
-
             }
 
         });
diff --git a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.dll b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.dll
index 596866fb..025a9ba8 100644
Binary files a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.dll and b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.dll differ
diff --git a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.winmd b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.winmd
index 44ead9bd..fc0956fe 100644
Binary files a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.winmd and b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.Initialization.winmd differ
diff --git a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.dll b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.dll
index a7432cc9..d0b1abec 100644
Binary files a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.dll and b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.dll differ
diff --git a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.winmd b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.winmd
index 7661376f..f13c7528 100644
Binary files a/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.winmd and b/build/staging/app-sdk/Arm64EC/Microsoft.Windows.Devices.Midi2.winmd differ
diff --git a/build/staging/app-sdk/Arm64EC/mididiag.exe b/build/staging/app-sdk/Arm64EC/mididiag.exe
index f22f4756..50585e67 100644
Binary files a/build/staging/app-sdk/Arm64EC/mididiag.exe and b/build/staging/app-sdk/Arm64EC/mididiag.exe differ
diff --git a/samples/cpp-winrt/basics/client-basics-cpp.vcxproj b/samples/cpp-winrt/basics/client-basics-cpp.vcxproj
index c0570701..17708f58 100644
--- a/samples/cpp-winrt/basics/client-basics-cpp.vcxproj
+++ b/samples/cpp-winrt/basics/client-basics-cpp.vcxproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props')" />
   <PropertyGroup Label="Globals">
-    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.1821</WindowsMidiServicesSdkPackage>
+    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.2011</WindowsMidiServicesSdkPackage>
     <CppWinRTOptimized>true</CppWinRTOptimized>
     <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
     <CppWinRTGenerateWindowsMetadata>false</CppWinRTGenerateWindowsMetadata>
diff --git a/samples/cpp-winrt/basics/packages.config b/samples/cpp-winrt/basics/packages.config
index 34c7026a..438885e7 100644
--- a/samples/cpp-winrt/basics/packages.config
+++ b/samples/cpp-winrt/basics/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.240405.15" targetFramework="native" />
-  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.1821" targetFramework="native" />
+  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.2011" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/samples/cpp-winrt/loopback-endpoints/loopback-endpoints-cpp.vcxproj b/samples/cpp-winrt/loopback-endpoints/loopback-endpoints-cpp.vcxproj
index fee2ba5c..5ea3aa1d 100644
--- a/samples/cpp-winrt/loopback-endpoints/loopback-endpoints-cpp.vcxproj
+++ b/samples/cpp-winrt/loopback-endpoints/loopback-endpoints-cpp.vcxproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props')" />
   <PropertyGroup Label="Globals">
-    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.1821</WindowsMidiServicesSdkPackage>
+    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.2011</WindowsMidiServicesSdkPackage>
     <CppWinRTOptimized>true</CppWinRTOptimized>
     <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
     <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>
diff --git a/samples/cpp-winrt/loopback-endpoints/packages.config b/samples/cpp-winrt/loopback-endpoints/packages.config
index 34c7026a..438885e7 100644
--- a/samples/cpp-winrt/loopback-endpoints/packages.config
+++ b/samples/cpp-winrt/loopback-endpoints/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.240405.15" targetFramework="native" />
-  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.1821" targetFramework="native" />
+  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.2011" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/samples/cpp-winrt/send-speed/packages.config b/samples/cpp-winrt/send-speed/packages.config
index 34c7026a..438885e7 100644
--- a/samples/cpp-winrt/send-speed/packages.config
+++ b/samples/cpp-winrt/send-speed/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.240405.15" targetFramework="native" />
-  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.1821" targetFramework="native" />
+  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.2011" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/samples/cpp-winrt/send-speed/send-speed-cpp.vcxproj b/samples/cpp-winrt/send-speed/send-speed-cpp.vcxproj
index 30bfff81..f48fa048 100644
--- a/samples/cpp-winrt/send-speed/send-speed-cpp.vcxproj
+++ b/samples/cpp-winrt/send-speed/send-speed-cpp.vcxproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props')" />
   <PropertyGroup Label="Globals">
-    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.1821</WindowsMidiServicesSdkPackage>
+    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.2011</WindowsMidiServicesSdkPackage>
     <CppWinRTOptimized>true</CppWinRTOptimized>
     <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
     <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>
diff --git a/samples/cpp-winrt/static-enum-endpoints/packages.config b/samples/cpp-winrt/static-enum-endpoints/packages.config
index 34c7026a..438885e7 100644
--- a/samples/cpp-winrt/static-enum-endpoints/packages.config
+++ b/samples/cpp-winrt/static-enum-endpoints/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.240405.15" targetFramework="native" />
-  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.1821" targetFramework="native" />
+  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.2011" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/samples/cpp-winrt/static-enum-endpoints/static-enum-endpoints-cpp.vcxproj b/samples/cpp-winrt/static-enum-endpoints/static-enum-endpoints-cpp.vcxproj
index 2d23d5b6..c94e85c3 100644
--- a/samples/cpp-winrt/static-enum-endpoints/static-enum-endpoints-cpp.vcxproj
+++ b/samples/cpp-winrt/static-enum-endpoints/static-enum-endpoints-cpp.vcxproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props')" />
   <PropertyGroup Label="Globals">
-    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.1821</WindowsMidiServicesSdkPackage>
+    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.2011</WindowsMidiServicesSdkPackage>
     <CppWinRTOptimized>true</CppWinRTOptimized>
     <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
     <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>
diff --git a/samples/cpp-winrt/virtual-device-app-winui/packages.config b/samples/cpp-winrt/virtual-device-app-winui/packages.config
index f4e1743f..a46f5c8c 100644
--- a/samples/cpp-winrt/virtual-device-app-winui/packages.config
+++ b/samples/cpp-winrt/virtual-device-app-winui/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.240405.15" targetFramework="native" />
-  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.1821" targetFramework="native" />
+  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.2011" targetFramework="native" />
   <package id="Microsoft.Windows.ImplementationLibrary" version="1.0.220914.1" targetFramework="native" />
   <package id="Microsoft.Windows.SDK.BuildTools" version="10.0.22621.756" targetFramework="native" />
   <package id="Microsoft.WindowsAppSDK" version="1.5.240607001" targetFramework="native" />
diff --git a/samples/cpp-winrt/virtual-device-app-winui/virtual-device-app-winui.vcxproj b/samples/cpp-winrt/virtual-device-app-winui/virtual-device-app-winui.vcxproj
index b6591bcf..0ef26aab 100644
--- a/samples/cpp-winrt/virtual-device-app-winui/virtual-device-app-winui.vcxproj
+++ b/samples/cpp-winrt/virtual-device-app-winui/virtual-device-app-winui.vcxproj
@@ -4,7 +4,7 @@
   <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props')" />
   <Import Project="..\packages\Microsoft.Windows.SDK.BuildTools.10.0.22621.756\build\Microsoft.Windows.SDK.BuildTools.props" Condition="Exists('..\packages\Microsoft.Windows.SDK.BuildTools.10.0.22621.756\build\Microsoft.Windows.SDK.BuildTools.props')" />
   <PropertyGroup Label="Globals">
-    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.1821</WindowsMidiServicesSdkPackage>
+    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.2011</WindowsMidiServicesSdkPackage>
     <CppWinRTOptimized>true</CppWinRTOptimized>
     <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
     <MinimalCoreWin>true</MinimalCoreWin>
diff --git a/samples/cpp-winrt/watch-endpoints/packages.config b/samples/cpp-winrt/watch-endpoints/packages.config
index 34c7026a..438885e7 100644
--- a/samples/cpp-winrt/watch-endpoints/packages.config
+++ b/samples/cpp-winrt/watch-endpoints/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.240405.15" targetFramework="native" />
-  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.1821" targetFramework="native" />
+  <package id="Microsoft.Windows.Devices.Midi2" version="1.0.1-preview.8.24308.2011" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/samples/cpp-winrt/watch-endpoints/watch-endpoints-cpp.vcxproj b/samples/cpp-winrt/watch-endpoints/watch-endpoints-cpp.vcxproj
index 676237b4..63da9424 100644
--- a/samples/cpp-winrt/watch-endpoints/watch-endpoints-cpp.vcxproj
+++ b/samples/cpp-winrt/watch-endpoints/watch-endpoints-cpp.vcxproj
@@ -2,7 +2,7 @@
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240405.15\build\native\Microsoft.Windows.CppWinRT.props')" />
   <PropertyGroup Label="Globals">
-    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.1821</WindowsMidiServicesSdkPackage>
+    <WindowsMidiServicesSdkPackage>Microsoft.Windows.Devices.Midi2.1.0.1-preview.8.24308.2011</WindowsMidiServicesSdkPackage>
     <CppWinRTOptimized>true</CppWinRTOptimized>
     <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
     <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>