diff --git a/main.js b/main.js
index 70468cf..4271337 100644
--- a/main.js
+++ b/main.js
@@ -500,11 +500,15 @@ app.whenReady().then(() => {
   // Auto-check for updates after 3 seconds
   setTimeout(async () => {
     try {
+      debugLog('update-check: starting');
       const result = await checkForUpdate();
+      debugLog(`update-check: available=${result && result.available}, remote=${result && result.remoteVersion}`);
       if (result && result.available && mainWindow && !mainWindow.isDestroyed()) {
         mainWindow.webContents.send('app:update-available', result);
       }
-    } catch {}
+    } catch (err) {
+      debugLog(`update-check failed: ${err && err.message || err}`);
+    }
   }, 3000);
 });
 
diff --git a/renderer/app.js b/renderer/app.js
index e46b02c..580d0f9 100644
--- a/renderer/app.js
+++ b/renderer/app.js
@@ -1750,6 +1750,11 @@ function renderSettings() {
           <input type="checkbox" class="settings-autosave" id="resumeQueueOnLaunchInput" ${globalSettings.resumeQueueOnLaunch === false ? '' : 'checked'}>
         </div>
       </div>
+      <div class="settings-section-label">Updates</div>
+      <div class="settings-row">
+        <label>Manuell prüfen</label>
+        <button class="btn btn-xs btn-secondary" id="manualUpdateCheckBtn">Nach Updates suchen</button>
+      </div>
       <div class="settings-section-label">Log</div>
       <div class="settings-row">
         <label>FileUploader Log</label>
@@ -1899,6 +1904,23 @@ function renderSettings() {
   }
 
   document.getElementById('chooseLogFilePathBtn')?.addEventListener('click', chooseLogFilePath);
+  document.getElementById('manualUpdateCheckBtn')?.addEventListener('click', async (e) => {
+    const btn = e.target;
+    btn.disabled = true;
+    btn.textContent = 'Prüfe...';
+    try {
+      const result = await window.api.checkForUpdate();
+      if (result && result.available) {
+        showUpdateBanner(result);
+        btn.textContent = 'Update gefunden!';
+      } else {
+        btn.textContent = 'Kein Update verfügbar';
+      }
+    } catch {
+      btn.textContent = 'Fehler beim Prüfen';
+    }
+    setTimeout(() => { btn.disabled = false; btn.textContent = 'Nach Updates suchen'; }, 3000);
+  });
   container.querySelectorAll('.settings-autosave').forEach((input) => {
     const eventName = input.type === 'checkbox' ? 'change' : 'input';
     input.addEventListener(eventName, scheduleSettingsSave);