diff --git a/lib/upload-manager.js b/lib/upload-manager.js
index 158f23b..ee2b367 100644
--- a/lib/upload-manager.js
+++ b/lib/upload-manager.js
@@ -430,7 +430,6 @@ class UploadManager extends EventEmitter {
       succeeded,
       failed: total - succeeded - skipped,
       skipped,
-      durationSec: Math.max(0, Math.round((Date.now() - this.startTime) / 1000)),
       files
     };
 
diff --git a/main.js b/main.js
index 3377674..f168069 100644
--- a/main.js
+++ b/main.js
@@ -2082,7 +2082,6 @@ ipcMain.handle('start-upload', async (_event, payload) => {
       succeeded: 0,
       failed: 0,
       skipped: 0,
-      durationSec: 0,
       files: []
     }, skippedJobs);
     try { await configStore.appendHistory(skippedSummary); } catch (error) {
@@ -2348,8 +2347,6 @@ ipcMain.handle('start-upload', async (_event, payload) => {
         total: tasks.length,
         succeeded: 0,
         failed: tasks.length,
-        skipped: 0,
-        durationSec: 0,
         files: [],
         error: err ? err.message : 'Unbekannter Fehler'
       };
diff --git a/renderer/app.js b/renderer/app.js
index 5870740..5449469 100644
--- a/renderer/app.js
+++ b/renderer/app.js
@@ -368,7 +368,6 @@ let _updateDownloadCancelable = false;
 let _updateCancelBusy = false;
 let _updateDialogReturnFocus = null;
 let _updateDialogInertState = [];
-let _batchCompletionTimer = null;
 let _startupAutoResumeController = null;
 let _startupAutoResumeCanceled = false;
 
@@ -3406,62 +3405,9 @@ function handleBatchDone(summary) {
   lastUploadStats = { state: 'idle', globalSpeedKbs: 0, totalBytes: lastUploadStats.totalBytes, elapsed: lastUploadStats.elapsed, activeJobs: 0 };
   updateStatusBar();
   _refreshSessionFailedSnapshot();
-  showBatchCompletionSummary(summary);
   _scheduleAutoRetryIfNeeded();
 }
 
-function _formatBatchCompletionDuration(seconds, english) {
-  const total = Math.max(0, Math.round(Number(seconds) || 0));
-  if (total < 60) return english ? `${total} sec` : `${total} Sek.`;
-  const minutes = Math.round(total / 60);
-  if (minutes < 60) return english ? `${minutes} min` : `${minutes} Min.`;
-  const hours = Math.floor(minutes / 60);
-  const remainder = minutes % 60;
-  return english ? `${hours} hr ${remainder} min` : `${hours} Std. ${remainder} Min.`;
-}
-
-function hideBatchCompletionSummary() {
-  const toast = document.getElementById('batchCompletionToast');
-  if (!toast) return;
-  if (_batchCompletionTimer) clearTimeout(_batchCompletionTimer);
-  _batchCompletionTimer = null;
-  toast.classList.remove('show');
-  setTimeout(() => {
-    if (!toast.classList.contains('show')) toast.hidden = true;
-  }, 240);
-}
-
-function showBatchCompletionSummary(summary) {
-  const toast = document.getElementById('batchCompletionToast');
-  const text = document.getElementById('batchCompletionText');
-  const showErrors = document.getElementById('batchCompletionShowErrors');
-  if (!toast || !text || !showErrors || !summary) return;
-  const total = Math.max(0, Number(summary.total) || 0);
-  if (total <= 0) return;
-  const succeeded = Math.max(0, Number(summary.succeeded) || 0);
-  const failed = Math.max(0, Number(summary.failed) || 0);
-  const skipped = Math.max(0, Number(summary.skipped) || 0);
-  const english = getUiLocale() === 'en-US';
-  const format = value => value.toLocaleString(getUiLocale());
-  const duration = _formatBatchCompletionDuration(summary.durationSec, english);
-  text.textContent = english
-    ? `${format(succeeded)} successful · ${format(failed)} failed · ${format(skipped)} skipped · ${duration}`
-    : `${format(succeeded)} erfolgreich · ${format(failed)} fehlgeschlagen · ${format(skipped)} übersprungen · ${duration}`;
-  const canShowErrors = failed > 0 && queueJobs.some(job => job.status === 'error');
-  showErrors.hidden = !canShowErrors;
-  toast.classList.toggle('has-failures', failed > 0);
-  toast.hidden = false;
-  requestAnimationFrame(() => toast.classList.add('show'));
-  if (_batchCompletionTimer) clearTimeout(_batchCompletionTimer);
-  _batchCompletionTimer = setTimeout(hideBatchCompletionSummary, 15000);
-}
-
-function showBatchCompletionErrors() {
-  document.getElementById('upload-tab')?.click();
-  setUploadSidebarFilter('error');
-  hideBatchCompletionSummary();
-}
-
 let _sessionFailedKeys = new Set();
 
 const _autoRetryState = { round: 0, timer: null };
@@ -7339,8 +7285,6 @@ function setupListeners() {
   document.getElementById('queueStatusFilter').addEventListener('change', applyQueueDetailFilters);
   document.getElementById('queueFilterResetBtn').addEventListener('click', resetQueueFilters);
   syncQueueFilterResetAction();
-  document.getElementById('batchCompletionShowErrors').addEventListener('click', showBatchCompletionErrors);
-  document.getElementById('batchCompletionClose').addEventListener('click', hideBatchCompletionSummary);
 
   const historyRetentionPicker = document.getElementById('historyRetentionPicker');
   const historyRetentionTrigger = document.getElementById('historyRetentionTrigger');
diff --git a/renderer/i18n.js b/renderer/i18n.js
index e859eb7..d1d4473 100644
--- a/renderer/i18n.js
+++ b/renderer/i18n.js
@@ -109,7 +109,6 @@
     ['Abbrechen', 'Cancel'],
     ['Filter zurücksetzen', 'Reset filters'],
     ['Filter', 'Filters'],
-    ['Fehler anzeigen', 'Show failures'],
     ['Jetzt installieren', 'Install now'],
     ['Jetzt updaten', 'Install now'],
     ['Alle Dateien', 'All files'],
diff --git a/renderer/index.html b/renderer/index.html
index 1251271..7b5f5d7 100644
--- a/renderer/index.html
+++ b/renderer/index.html
@@ -656,11 +656,6 @@
   </div>
 
   <div class="copy-toast" id="copyToast" role="status" aria-live="polite" aria-atomic="true"></div>
-  <div class="batch-completion-toast" id="batchCompletionToast" role="status" aria-live="polite" aria-atomic="true" hidden>
-    <span id="batchCompletionText"></span>
-    <button class="btn btn-xs btn-danger" id="batchCompletionShowErrors" hidden>Fehler anzeigen</button>
-    <button class="batch-completion-close" id="batchCompletionClose" aria-label="Schließen">×</button>
-  </div>
   <div class="startup-resume-banner" id="startupResumeBanner" role="status" aria-live="polite" hidden>
     <span id="startupResumeMessage"></span>
     <button class="btn btn-xs btn-secondary" id="cancelStartupResumeBtn">Abbrechen</button>
diff --git a/renderer/styles.css b/renderer/styles.css
index f51f927..e1c33ed 100644
--- a/renderer/styles.css
+++ b/renderer/styles.css
@@ -1735,65 +1735,6 @@ select.hs-input { max-width: none; width: auto; min-width: 140px; }
 }
 .copy-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
 
-.batch-completion-toast {
-  position: fixed;
-  right: 14px;
-  bottom: 18px;
-  z-index: 2200;
-  max-width: min(680px, calc(100vw - 28px));
-  display: flex;
-  align-items: center;
-  gap: 10px;
-  padding: 9px 9px 9px 13px;
-  border: 1px solid var(--success);
-  border-radius: 8px;
-  background: rgba(35, 35, 35, .97);
-  color: var(--text);
-  box-shadow: 0 14px 34px rgba(0, 0, 0, .42);
-  font-size: 12px;
-  opacity: 0;
-  transform: translateY(12px);
-  transition: opacity .2s ease, transform .24s cubic-bezier(.22, 1, .36, 1);
-}
-
-.batch-completion-toast[hidden] {
-  display: none;
-}
-
-.batch-completion-toast.show {
-  opacity: 1;
-  transform: translateY(0);
-}
-
-.batch-completion-toast.has-failures {
-  border-color: var(--danger);
-}
-
-#batchCompletionText {
-  min-width: 0;
-  font-variant-numeric: tabular-nums;
-}
-
-.batch-completion-close {
-  width: 26px;
-  height: 26px;
-  display: grid;
-  place-items: center;
-  padding: 0;
-  border: 0;
-  border-radius: 5px;
-  background: transparent;
-  color: var(--text-dim);
-  cursor: pointer;
-  font-size: 18px;
-  line-height: 1;
-}
-
-.batch-completion-close:hover {
-  background: var(--bg-active);
-  color: var(--text);
-}
-
 .startup-resume-banner {
   position: fixed;
   left: 50%;
diff --git a/tests/i18n.test.js b/tests/i18n.test.js
index db0c68f..78e7a65 100644
--- a/tests/i18n.test.js
+++ b/tests/i18n.test.js
@@ -31,7 +31,6 @@ test('translations cover static labels and interpolated status text in both lang
   assert.equal(translateText('Alle Status', 'en'), 'Any status');
   assert.equal(translateText('Any status', 'de'), 'Alle Status');
   assert.equal(translateText('Filter', 'en'), 'Filters');
-  assert.equal(translateText('Fehler anzeigen', 'en'), 'Show failures');
 });
 
 test('sidebar hierarchy uses distinct English and German kicker labels', () => {
diff --git a/tests/startup-renderer.test.js b/tests/startup-renderer.test.js
index ebc2034..aa577f4 100644
--- a/tests/startup-renderer.test.js
+++ b/tests/startup-renderer.test.js
@@ -179,7 +179,6 @@ test('header occupies its final geometry before asynchronous initialization', ()
   assert.match(html, /class="update-progress-footer"[\s\S]*id="updateProgressDetails"[\s\S]*id="updateProgressSize"[\s\S]*id="updateProgressSpeed"[\s\S]*id="updateProgressEta"[\s\S]*id="updateProgressText"/u);
   assert.match(html, /id="queueFilterResetBtn"[^>]*disabled[^>]*>Filter zurücksetzen</u);
   assert.match(html, /class="queue-filter-summary"[\s\S]*id="queueActiveFilterCount"[^>]*>0</u);
-  assert.match(html, /id="batchCompletionToast"[^>]*hidden[\s\S]*id="batchCompletionText"[\s\S]*id="batchCompletionShowErrors"/u);
   assert.doesNotMatch(html, /<\/div>\s*<div class="queue-filter-bar"/u);
   assert.match(css, /\.queue-filter-bar\s*\{[^}]*display:\s*flex;[^}]*margin-left:\s*auto;[^}]*border:\s*1px solid var\(--border\);[^}]*border-radius:\s*7px;/su);
   assert.match(css, /#updateProgressDetails\s*\{[^}]*display:\s*grid;[^}]*grid-template-columns:\s*19ch 2ch 11ch 2ch 10ch;[^}]*column-gap:\s*0;[^}]*font-variant-numeric:\s*tabular-nums;/su);
diff --git a/tests/ui-smoke.js b/tests/ui-smoke.js
index bc936bc..248af38 100644
--- a/tests/ui-smoke.js
+++ b/tests/ui-smoke.js
@@ -759,30 +759,6 @@ setTimeout(async () => {
     })()\`);
     check('Queue filter reset clears every filter and updates the stable active count', queueFilterReset.before.hidden === false && queueFilterReset.before.disabled === false && queueFilterReset.before.count === '4' && queueFilterReset.before.active === true && queueFilterReset.after.hidden === false && queueFilterReset.after.disabled === true && queueFilterReset.after.count === '0' && queueFilterReset.after.active === false && queueFilterReset.after.sidebar === 'all' && queueFilterReset.after.search === '' && queueFilterReset.after.hoster === '' && queueFilterReset.after.status === '' && queueFilterReset.after.allPressed === 'true' && queueFilterReset.after.visible === 'filter-a|filter-b');
 
-    const batchCompletionSummary = await wc.executeJavaScript(\`(async () => {
-      setUiLanguage('en');
-      queueJobs = [{ id: 'batch-error', file: 'C:/ui/error.bin', fileName: 'error.bin', hoster: 'byse.sx', status: 'error', error: 'Network failure', bytesUploaded: 0, bytesTotal: 100, progress: 0 }];
-      rebuildJobIndex();
-      renderQueueTable();
-      showBatchCompletionSummary({ total: 1237, succeeded: 1234, failed: 1, skipped: 2, durationSec: 754 });
-      await new Promise(resolve => requestAnimationFrame(resolve));
-      const toast = document.getElementById('batchCompletionToast');
-      const before = {
-        hidden: toast.hidden,
-        shown: toast.classList.contains('show'),
-        text: document.getElementById('batchCompletionText').textContent,
-        actionHidden: document.getElementById('batchCompletionShowErrors').hidden
-      };
-      document.getElementById('batchCompletionShowErrors').click();
-      const after = { filter: uploadSidebarFilter, shown: toast.classList.contains('show') };
-      setUiLanguage('de');
-      queueJobs = [];
-      rebuildJobIndex();
-      setUploadSidebarFilter('all');
-      return { before, after };
-    })()\`);
-    check('Batch completion summarizes results and opens the failed upload filter', batchCompletionSummary.before.hidden === false && batchCompletionSummary.before.shown === true && batchCompletionSummary.before.text === '1,234 successful · 1 failed · 2 skipped · 13 min' && batchCompletionSummary.before.actionHidden === false && batchCompletionSummary.after.filter === 'error' && batchCompletionSummary.after.shown === false);
-
     const queueSelectionAnchor = await wc.executeJavaScript(\`(() => {
       queueJobs = ['a', 'b', 'c', 'd'].map(id => ({ id: 'anchor-' + id, file: 'C:/ui/anchor-' + id + '.bin', fileName: 'anchor-' + id + '.bin', hoster: 'byse.sx', status: 'queued', bytesUploaded: 0, bytesTotal: 100, progress: 0 }));
       selectedJobIds.clear();
diff --git a/tests/upload-manager.test.js b/tests/upload-manager.test.js
index 9bb763c..1650d08 100644
--- a/tests/upload-manager.test.js
+++ b/tests/upload-manager.test.js
@@ -159,8 +159,6 @@ describe('UploadManager', () => {
     assert.equal(summary.total, 2);
     assert.equal(summary.succeeded, 2);
     assert.equal(summary.failed, 0);
-    assert.equal(Number.isInteger(summary.durationSec), true);
-    assert.equal(summary.durationSec >= 0, true);
     assert.equal(summary.files.length, 2);
   });