diff --git a/CHANGELOG.md b/CHANGELOG.md
index 073ff75..10c427e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ Each entry links to the commit or pull request that introduced the change.
 
 ## [Unreleased]
 
+### Fixed
+
+- Microsoft Store packages now include the complete self-contained .NET application layout, preventing startup failures caused by a missing managed entry assembly. ([PR #11](https://github.com/TheBeems/CodexUsageDock/pull/11))
+
 ## [0.5.1] - 2026-07-16
 
 ### Changed
diff --git a/CodexUsageDock/CodexUsageDock.csproj b/CodexUsageDock/CodexUsageDock.csproj
index 6d889af..a7faeff 100644
--- a/CodexUsageDock/CodexUsageDock.csproj
+++ b/CodexUsageDock/CodexUsageDock.csproj
@@ -30,7 +30,6 @@
   <PropertyGroup Condition="'$(DistributionMode)'=='Installer'">
     <WindowsPackageType>None</WindowsPackageType>
     <EnableMsixTooling>false</EnableMsixTooling>
-    <PublishSingleFile>false</PublishSingleFile>
     <PublishReadyToRun>true</PublishReadyToRun>
   </PropertyGroup>
 
@@ -107,7 +106,8 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <PublishSingleFile>true</PublishSingleFile>
+    <!-- MSIX already provides one installation unit; keep the app-local .NET layout explicit and verifiable. -->
+    <PublishSingleFile>false</PublishSingleFile>
     <IsAotCompatible>true</IsAotCompatible>
 
     <CsWinRTAotOptimizerEnabled>true</CsWinRTAotOptimizerEnabled>
diff --git a/DEVELOPMENT.md b/DEVELOPMENT.md
index 85c792a..b12c8da 100644
--- a/DEVELOPMENT.md
+++ b/DEVELOPMENT.md
@@ -118,7 +118,7 @@ The command builds from an isolated manifest copy with the four-part MSIX versio
 - publisher `CN=F748B633-A4F0-42F4-B6F1-B5BDCAED8E0C`;
 - x64 and ARM64 architectures;
 - the complete generated asset set and its required pixel dimensions;
-- app-local .NET runtime files and, when emitted separately from the single-file bundle, self-contained `includedFrameworks` metadata;
+- the complete app-local managed application and .NET runtime layout, including self-contained `includedFrameworks` metadata;
 - packaged COM and `com.microsoft.commandpalette` registrations;
 - one bundle inside the final `.msixupload`.
 
diff --git a/scripts/build-release.ps1 b/scripts/build-release.ps1
index d2f4983..e5f5efd 100644
--- a/scripts/build-release.ps1
+++ b/scripts/build-release.ps1
@@ -358,6 +358,10 @@ function Assert-SelfContainedMsix {
     try {
         $requiredRuntimeEntries = @(
             'CodexUsageDock.exe',
+            'CodexUsageDock.dll',
+            'CodexUsageDock.deps.json',
+            'CodexUsageDock.runtimeconfig.json',
+            'System.Private.CoreLib.dll',
             'coreclr.dll',
             'hostfxr.dll',
             'hostpolicy.dll'
@@ -375,24 +379,20 @@ function Assert-SelfContainedMsix {
             throw "MSIX is missing required Microsoft Store assets: $($missingAssetEntries -join ', ')."
         }
 
-        # A self-contained single-file publish embeds runtimeconfig.json in the app bundle.
-        # If the SDK emits it as a loose file, validate that it still declares the included runtime.
         $runtimeConfigEntry = $archive.GetEntry('CodexUsageDock.runtimeconfig.json')
-        if ($runtimeConfigEntry) {
-            $reader = [IO.StreamReader]::new($runtimeConfigEntry.Open())
-            try {
-                $runtimeConfig = $reader.ReadToEnd() | ConvertFrom-Json
-            }
-            finally {
-                $reader.Dispose()
-            }
+        $reader = [IO.StreamReader]::new($runtimeConfigEntry.Open())
+        try {
+            $runtimeConfig = $reader.ReadToEnd() | ConvertFrom-Json
+        }
+        finally {
+            $reader.Dispose()
+        }
 
-            $includedFramework = @($runtimeConfig.runtimeOptions.includedFrameworks) |
-                Where-Object { $_.name -eq 'Microsoft.NETCore.App' } |
-                Select-Object -First 1
-            if (-not $includedFramework) {
-                throw 'MSIX runtimeconfig is framework-dependent; expected an included Microsoft.NETCore.App framework.'
-            }
+        $includedFramework = @($runtimeConfig.runtimeOptions.includedFrameworks) |
+            Where-Object { $_.name -eq 'Microsoft.NETCore.App' } |
+            Select-Object -First 1
+        if (-not $includedFramework) {
+            throw 'MSIX runtimeconfig is framework-dependent; expected an included Microsoft.NETCore.App framework.'
         }
     }
     finally {
diff --git a/scripts/test-integration.ps1 b/scripts/test-integration.ps1
index 1ede091..d9f10de 100644
--- a/scripts/test-integration.ps1
+++ b/scripts/test-integration.ps1
@@ -352,7 +352,10 @@ else {
 }
 
 $requiredRuntimeFiles = @(
+    'CodexUsageDock.dll'
+    'CodexUsageDock.deps.json'
     'CodexUsageDock.runtimeconfig.json'
+    'System.Private.CoreLib.dll'
     'coreclr.dll'
     'hostfxr.dll'
     'hostpolicy.dll'