diff --git a/pom.xml b/pom.xml
index ead3b26..1b5d2bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>de.assecutor.emulatorstation</groupId>
     <artifactId>emulatorstation</artifactId>
-    <version>0.9.12</version>
+    <version>0.9.13</version>
 
     <packaging>jar</packaging>
 
diff --git a/src/main/java/de/assecutor/emulatorstation/Application.java b/src/main/java/de/assecutor/emulatorstation/Application.java
index 81a06da..a925040 100644
--- a/src/main/java/de/assecutor/emulatorstation/Application.java
+++ b/src/main/java/de/assecutor/emulatorstation/Application.java
@@ -10,8 +10,12 @@ import java.util.concurrent.ConcurrentHashMap;
 import de.assecutor.emulatorstation.pojo.UserInfo;
 import de.assecutor.emulatorstation.pojo.NiederlassungInfo;
 
+import org.springframework.scheduling.annotation.EnableScheduling;
+
 @SpringBootApplication
 @Push
+@EnableScheduling
+
 @Theme("default")
 public class Application implements AppShellConfigurator {
     // Single user configuration
@@ -31,6 +35,7 @@ public class Application implements AppShellConfigurator {
             Map.entry("Frankfurt am Main", new NiederlassungInfo("Frankfurt am Main", "172.18.0.105", "6085", "/frankfurt")),
             Map.entry("Geschäftführung", new NiederlassungInfo("Geschäftführung", "172.18.0.112", "6092", "/gfl")));
 
+    public static final java.util.Map<String, com.vaadin.flow.server.WrappedSession> sessionsById = new ConcurrentHashMap<>();
     public static final Map<String, String> activeNiederlassungen = new ConcurrentHashMap<>();
     public static final Map<String, String> activeSessions = new ConcurrentHashMap<>(); // sessionId -> niederlassung
 
diff --git a/src/main/java/de/assecutor/emulatorstation/base/domain/ContainerShutdownScheduler.java b/src/main/java/de/assecutor/emulatorstation/base/domain/ContainerShutdownScheduler.java
new file mode 100644
index 0000000..c8e4b35
--- /dev/null
+++ b/src/main/java/de/assecutor/emulatorstation/base/domain/ContainerShutdownScheduler.java
@@ -0,0 +1,99 @@
+package de.assecutor.emulatorstation.base.domain;
+
+import de.assecutor.emulatorstation.Application;
+import de.assecutor.emulatorstation.pojo.NiederlassungInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+
+@Service
+public class ContainerShutdownScheduler {
+
+    private static final Logger logger = LoggerFactory.getLogger(ContainerShutdownScheduler.class);
+
+    private static final String DOCKER_HOST = "172.16.0.158"; // gleiches Fallback wie in MainView/LoginView
+
+    private final HttpClient http = HttpClient.newHttpClient();
+
+    // Täglich um 22:00 Uhr Serverzeit
+    @Scheduled(cron = "0 0 22 * * *")
+    public void shutdownAllRunningContainers() {
+        logger.info("[Scheduler] Starte nächtliches Herunterfahren aller laufenden Emulator-Container (22:00)");
+        for (NiederlassungInfo info : Application.niederlassungen.values()) {
+            String containerName = buildContainerName(info);
+            try {
+                if (isRunning(containerName)) {
+                    stopContainer(containerName);
+                } else {
+                    logger.info("[Scheduler] Container '{}' läuft nicht – nichts zu tun", containerName);
+                }
+            } catch (Exception e) {
+                logger.warn("[Scheduler] Fehler beim Beenden des Containers '{}': {}", containerName, e.toString());
+            }
+        }
+        logger.info("[Scheduler] Nächtliches Herunterfahren abgeschlossen");
+
+        // Alle Sessions beenden (Logout erzwingen)
+        logger.info("[Scheduler] Beginne Session-Logout für alle aktiven Sessions: {}", Application.sessionsById.size());
+        for (com.vaadin.flow.server.WrappedSession session : new java.util.ArrayList<>(Application.sessionsById.values())) {
+            try {
+                session.invalidate();
+            } catch (Exception e) {
+                logger.warn("[Scheduler] Fehler beim Invalidieren einer Session: {}", e.toString());
+            }
+        }
+        // Zur Sicherheit interne Mappings leeren
+        Application.activeSessions.clear();
+        Application.activeNiederlassungen.clear();
+        Application.sessionsById.clear();
+        logger.info("[Scheduler] Session-Logout abgeschlossen. Aktive Sessions: {} / Maps geleert.", Application.activeSessions.size());
+
+    }
+
+    private String buildContainerName(NiederlassungInfo info) {
+        return "android-container-" + info.name();
+    }
+
+    private boolean isRunning(String containerName) throws Exception {
+        HttpRequest req = HttpRequest.newBuilder()
+                .uri(URI.create("http://" + DOCKER_HOST + ":2375/containers/" + containerName + "/json"))
+                .GET()
+                .build();
+        HttpResponse<String> resp = http.send(req, HttpResponse.BodyHandlers.ofString());
+        if (resp.statusCode() == 200) {
+            String body = resp.body();
+            boolean running = body != null && body.contains("\"Running\":true");
+            logger.info("[Scheduler] Inspect '{}' -> running={}", containerName, running);
+            return running;
+        } else if (resp.statusCode() == 404) {
+            logger.info("[Scheduler] Container '{}' existiert nicht (404)", containerName);
+            return false;
+        } else {
+            logger.info("[Scheduler] Inspect '{}' -> status {}", containerName, resp.statusCode());
+            return false;
+        }
+    }
+
+    private void stopContainer(String containerName) throws Exception {
+        HttpRequest req = HttpRequest.newBuilder()
+                .uri(URI.create("http://" + DOCKER_HOST + ":2375/containers/" + containerName + "/stop"))
+                .POST(HttpRequest.BodyPublishers.noBody())
+                .build();
+        HttpResponse<String> resp = http.send(req, HttpResponse.BodyHandlers.ofString());
+        int status = resp.statusCode();
+        if (status == 204 || status == 304) {
+            logger.info("[Scheduler] Container '{}' gestoppt (status={})", containerName, status);
+        } else if (status == 404) {
+            logger.info("[Scheduler] Container '{}' nicht gefunden (404)", containerName);
+        } else {
+            logger.warn("[Scheduler] Unerwarteter Status beim Stoppen von '{}' -> {} / {}", containerName, status, resp.body());
+        }
+    }
+}
+
diff --git a/src/main/java/de/assecutor/emulatorstation/base/ui/view/LoginView.java b/src/main/java/de/assecutor/emulatorstation/base/ui/view/LoginView.java
index bb1bad5..f0d53e7 100644
--- a/src/main/java/de/assecutor/emulatorstation/base/ui/view/LoginView.java
+++ b/src/main/java/de/assecutor/emulatorstation/base/ui/view/LoginView.java
@@ -99,12 +99,6 @@ public class LoginView extends VerticalLayout {
                 return;
             }
 
-            // Prüfen ob Niederlassung bereits belegt ist
-            if (Application.activeNiederlassungen.containsKey(niederlassung)) {
-                Notification.show("Niederlassung ist bereits von einer anderen Session belegt", 3000,
-                        Notification.Position.MIDDLE);
-                return;
-            }
 
             var niederlassungInfo = Application.niederlassungen.get(niederlassung);
             if (niederlassungInfo == null) {
@@ -154,4 +148,79 @@ public class LoginView extends VerticalLayout {
             MainLayout.instance.setDrawerOpened(false);
         }
     }
+
+    private boolean isContainerRunning(de.assecutor.emulatorstation.pojo.NiederlassungInfo info) {
+        if (info == null) {
+            return false;
+        }
+        final String srv = "172.16.0.158"; // Fallback wie in MainView
+        final String name = "android-container-" + info.name();
+        try {
+            var client = java.net.http.HttpClient.newHttpClient();
+            var request = java.net.http.HttpRequest.newBuilder()
+                    .uri(java.net.URI.create("http://" + srv + ":2375/containers/" + name + "/json"))
+                    .GET()
+                    .build();
+            var response = client.send(request, java.net.http.HttpResponse.BodyHandlers.ofString());
+            if (response.statusCode() == 200) {
+                var body = response.body();
+                return body != null && body.contains("\"Running\":true");
+            }
+        } catch (Exception e) {
+            logger.warn("Fehler beim Pruefen des Container-Status fuer '{}': {}", name, e.toString());
+        }
+        return false;
+    }
+
+    private void completeLogin(com.vaadin.flow.component.UI ui, String password,
+                               de.assecutor.emulatorstation.pojo.NiederlassungInfo niederlassungInfo,
+                               boolean adoptRunningContainer) {
+        String niederlassung = niederlassungInfo.name();
+
+        String sessionId = ui.getSession().getSession().getId();
+        // Session niemals ablaufen lassen
+        ui.getSession().getSession().setMaxInactiveInterval(-1);
+
+        // HttpSession/WrappedSession im Registry merken, um später invalidieren zu können
+        Application.sessionsById.put(sessionId, ui.getSession().getSession());
+
+
+        // Session registrieren
+        Application.activeSessions.put(sessionId, niederlassung);
+        Application.activeNiederlassungen.put(niederlassung, sessionId);
+
+        // Log that Niederlassung is now blocked
+        logger.info("Niederlassung '{}' wurde gesperrt fuer Session {}", niederlassung, sessionId);
+        logger.info("Aktive Niederlassungen: {}", Application.activeNiederlassungen.keySet());
+
+        // Spring Security Authentifizierung setzen
+        var authorities = java.util.List.of(new org.springframework.security.core.authority.SimpleGrantedAuthority("ROLE_USER"));
+        var authentication = new org.springframework.security.authentication.UsernamePasswordAuthenticationToken(
+                Application.SINGLE_USERNAME, password, authorities);
+        org.springframework.security.core.context.SecurityContextHolder.getContext().setAuthentication(authentication);
+
+        // Spring Security Kontext explizit in der HTTP-Session speichern, damit Reload eingeloggt bleibt
+        ui.getSession().getSession().setAttribute(
+                org.springframework.security.web.context.HttpSessionSecurityContextRepository.SPRING_SECURITY_CONTEXT_KEY,
+                org.springframework.security.core.context.SecurityContextHolder.getContext());
+
+        // Session-Daten setzen
+        ui.getSession().setAttribute("user", Application.SINGLE_USERNAME);
+        ui.getSession().setAttribute("username", Application.SINGLE_USERNAME);
+        ui.getSession().setAttribute("niederlassung", niederlassungInfo);
+        ui.getSession().setAttribute("sessionId", sessionId);
+        if (adoptRunningContainer) {
+            // UI soll direkt in gestarteten Zustand gehen
+            ui.getSession().setAttribute("emulatorStarted", true);
+        }
+
+        logger.info("Login erfolgreich - Session-Daten gesetzt:");
+        logger.info("Username: {}", Application.SINGLE_USERNAME);
+        logger.info("Niederlassung: {}", niederlassungInfo.name());
+        logger.info("SessionId: {}", sessionId);
+        logger.info("Aktive Sessions: {}/{}", Application.activeSessions.size(), Application.MAX_ACTIVE_SESSIONS);
+
+        ui.navigate("main");
+    }
+
 }
diff --git a/src/main/java/de/assecutor/emulatorstation/base/ui/view/MainView.java b/src/main/java/de/assecutor/emulatorstation/base/ui/view/MainView.java
index addca98..8f1b140 100644
--- a/src/main/java/de/assecutor/emulatorstation/base/ui/view/MainView.java
+++ b/src/main/java/de/assecutor/emulatorstation/base/ui/view/MainView.java
@@ -740,6 +740,8 @@ public final class MainView extends Main implements BeforeEnterObserver {
                             if (sessionId != null) {
                                 Application.activeSessions.remove(sessionId);
                                 logger.info("Session {} aus aktiven Sessions entfernt", sessionId);
+                                Application.sessionsById.remove(sessionId);
+
                             }
                             if (niederlassung != null) {
                                 Application.activeNiederlassungen.remove(niederlassung.name());
diff --git a/src/main/java/de/assecutor/emulatorstation/base/ui/view/security/SessionListener.java b/src/main/java/de/assecutor/emulatorstation/base/ui/view/security/SessionListener.java
index 207a198..d997590 100644
--- a/src/main/java/de/assecutor/emulatorstation/base/ui/view/security/SessionListener.java
+++ b/src/main/java/de/assecutor/emulatorstation/base/ui/view/security/SessionListener.java
@@ -13,9 +13,14 @@ public class SessionListener implements SessionDestroyListener {
     public void sessionDestroy(SessionDestroyEvent event) {
         String username = (String) event.getSession().getAttribute("user");
         NiederlassungInfo niederlassung = (NiederlassungInfo) event.getSession().getAttribute("niederlassung");
+        String sessionId = (String) event.getSession().getAttribute("sessionId");
 
         if (username != null && niederlassung != null) {
             Application.activeNiederlassungen.remove(niederlassung.name());
         }
+        if (sessionId != null) {
+            Application.activeSessions.remove(sessionId);
+            Application.sessionsById.remove(sessionId);
+        }
     }
 }