diff --git a/php/containers.json b/php/containers.json
index 99c9a181d87..34a7b0d248e 100644
--- a/php/containers.json
+++ b/php/containers.json
@@ -475,6 +475,7 @@
           "protocol": "tcp"
         }
       ],
+      "internal_port": "%APACHE_PORT%",
       "environment": [
         "INSTANCE_ID=%INSTANCE_ID%",
         "APACHE_PORT=%APACHE_PORT%"
diff --git a/php/public/index.php b/php/public/index.php
index 87421cdc650..de46eb411dc 100644
--- a/php/public/index.php
+++ b/php/public/index.php
@@ -176,6 +176,6 @@
     }
 });
 
-$errorMiddleware = $app->addErrorMiddleware(true, true, true);
+$errorMiddleware = $app->addErrorMiddleware(false, true, true);
 
 $app->run();
diff --git a/php/src/Controller/DockerController.php b/php/src/Controller/DockerController.php
index cdb8b057db1..8f29949b7ae 100644
--- a/php/src/Controller/DockerController.php
+++ b/php/src/Controller/DockerController.php
@@ -255,7 +255,11 @@ public function StartDomaincheckContainer() : void
         }
 
         $this->StopDomaincheckContainer();
-        $this->PerformRecursiveContainerStart($id);
+        try {
+            $this->PerformRecursiveContainerStart($id);
+        } catch (\Exception $e) {
+            error_log('Could not start domaincheck container: ' . $e->getMessage());
+        }
 
         // Cache the start for 10 minutes
         apcu_add($cacheKey, '1', 600);
diff --git a/php/templates/containers.twig b/php/templates/containers.twig
index b4589e224c9..f5f12b3e6c9 100644
--- a/php/templates/containers.twig
+++ b/php/templates/containers.twig
@@ -24,6 +24,7 @@
         {% set isAnyRunning = false %}
         {% set isAnyRestarting = false %}
         {% set isWatchtowerRunning = false %}
+        {% set isDomaincheckRunning = false %}
         {% set isBackupOrRestoreRunning = false %}
         {% set isApacheStarting = false %}
         {# Setting newMajorVersion to '' will hide corresponding options/elements, can be set to an integer like 26 in order to show corresponding elements. If set, also increase installLatestMajor in https://github.com/nextcloud/all-in-one/blob/main/php/src/Controller/DockerController.php #}
@@ -45,6 +46,9 @@
             {% if container.GetIdentifier() == 'nextcloud-aio-watchtower' and class(container.GetRunningState()) == 'AIO\\Container\\State\\RunningState' %}
                 {% set isWatchtowerRunning = true %}
             {% endif %}
+            {% if container.GetIdentifier() == 'nextcloud-aio-domaincheck' and class(container.GetRunningState()) == 'AIO\\Container\\State\\RunningState' %}
+                {% set isDomaincheckRunning = true %}
+            {% endif %}
             {% if container.GetIdentifier() == 'nextcloud-aio-apache' and class(container.GetStartingState()) == 'AIO\\Container\\State\\StartingState' %}
                 {% set isApacheStarting = true %}
             {% endif %}
@@ -69,7 +73,10 @@
             <a href="" class="button reload">Reload ↻</a><br/>
         {% else %}
             {% if is_backup_container_running == false and domain == "" %}
-                {% if is_mastercontainer_update_available == true %}
+                {% if isDomaincheckRunning == false %}
+                    <h2>Domaincheck container is not running</h2>
+                    This is not expected. Most likely this happened because port {{ apache_port }} is already in use on your server. You can check the mastercontainer logs and domaincheck container logs for further clues. You should be able to resolve this by adjusting the APACHE_PORT by following the <b><a href="https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md">reverse proxy documentation</a></b>. Advice: have a detailed look at the changed docker run command for AIO.
+                {% elseif is_mastercontainer_update_available == true %}
                     <h2>Mastercontainer update</h2>
                     ⚠️ A mastercontainer update is available. Please click on the button below to update it. Afterwards, you will be able to proceed with the setup.<br><br>
                     <form method="POST" action="/api/docker/watchtower" class="xhr">