diff --git a/FilterCair.Client/FilterCair.Client.csproj b/FilterCair.Client/FilterCair.Client.csproj
index 78aa0e7..f8dda7d 100644
--- a/FilterCair.Client/FilterCair.Client.csproj
+++ b/FilterCair.Client/FilterCair.Client.csproj
@@ -19,7 +19,8 @@
     <ServiceWorker Include="wwwroot\service-worker.js" PublishedContent="wwwroot\service-worker.published.js" />
   </ItemGroup>
 
-  <ItemGroup>
+
+	<ItemGroup>
     <ProjectReference Include="..\FilterCair.Shared\FilterCair.Shared.csproj" />
   </ItemGroup>
 
diff --git a/FilterCair.Client/wwwroot/index.html b/FilterCair.Client/wwwroot/index.html
index f6e620e..1af5f2b 100644
--- a/FilterCair.Client/wwwroot/index.html
+++ b/FilterCair.Client/wwwroot/index.html
@@ -47,6 +47,10 @@
     <script src="_framework/blazor.webassembly.js"></script>
     <script src="_content/Microsoft.Authentication.WebAssembly.Msal/AuthenticationService.js"></script>
 
+    <script>
+        navigator.serviceWorker.register('service-worker.js', { updateViaCache: 'none' });
+    </script>
+
 </body>
 
 </html>
\ No newline at end of file
diff --git a/FilterCair.Client/wwwroot/web.config b/FilterCair.Client/wwwroot/web.config
new file mode 100644
index 0000000..ed68460
--- /dev/null
+++ b/FilterCair.Client/wwwroot/web.config
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+	<system.webServer>
+		<staticContent>
+			<!-- Standard-MIME für PWAs -->
+			<mimeMap fileExtension=".webmanifest" mimeType="application/manifest+json" />
+			<!-- Bonus: auch Source Maps und WebAssembly korrekt -->
+			<mimeMap fileExtension=".wasm" mimeType="application/wasm" />
+			<mimeMap fileExtension=".json" mimeType="application/json" />
+			<mimeMap fileExtension=".dll" mimeType="application/octet-stream" />
+		</staticContent>
+	</system.webServer>
+</configuration>