diff --git a/src/renderer/components/MessageStatusBadge.test.tsx b/src/renderer/components/MessageStatusBadge.test.tsx
new file mode 100644
index 000000000..268a25afb
--- /dev/null
+++ b/src/renderer/components/MessageStatusBadge.test.tsx
@@ -0,0 +1,50 @@
+import { render, screen } from '@testing-library/react';
+import type { ReactElement } from 'react';
+import { describe, expect, it, vi } from 'vitest';
+import { axe } from 'vitest-axe';
+
+import { MessageStatusBadge } from '@/renderer/components/MessageStatusBadge';
+import { hydrateAxeThemeColors } from '@/renderer/lib/a11yTestHelpers';
+
+vi.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (key: string) => key,
+  }),
+}));
+
+async function renderAndAssertAxe(ui: ReactElement): Promise<ReturnType<typeof render>> {
+  const view = render(ui);
+  hydrateAxeThemeColors(view.container);
+  expect(await axe(view.container)).toHaveNoViolations();
+  return view;
+}
+
+describe('MessageStatusBadge', () => {
+  it.each(['tcp', 'http'] as const)(
+    'uses WiFi mesh-ACK tooltip for failed device sends over %s',
+    async (connectionType) => {
+      await renderAndAssertAxe(
+        <MessageStatusBadge status="failed" transport="device" connectionType={connectionType} />,
+      );
+      expect(
+        screen.getByLabelText(
+          'messageStatusBadge.tooltipPrefixDevice: messageStatusBadge.noAckTooltipWifi',
+        ),
+      ).toBeTruthy();
+      expect(screen.getByText(/messageStatusBadge.transportWifi/)).toBeTruthy();
+      expect(screen.getByText(/messageStatusBadge.noAck/)).toBeTruthy();
+    },
+  );
+
+  it('keeps the generic no-ACK tooltip for failed serial device sends', async () => {
+    await renderAndAssertAxe(
+      <MessageStatusBadge status="failed" transport="device" connectionType="serial" />,
+    );
+    expect(
+      screen.getByLabelText(
+        'messageStatusBadge.tooltipPrefixDevice: messageStatusBadge.noAckTooltip',
+      ),
+    ).toBeTruthy();
+    expect(screen.queryByLabelText(/noAckTooltipWifi/)).toBeNull();
+  });
+});
diff --git a/src/renderer/components/MessageStatusBadge.tsx b/src/renderer/components/MessageStatusBadge.tsx
index 5ce1fc664..7dd361e74 100644
--- a/src/renderer/components/MessageStatusBadge.tsx
+++ b/src/renderer/components/MessageStatusBadge.tsx
@@ -70,7 +70,9 @@ export function MessageStatusBadge({
     status === 'failed' && context === 'room'
       ? (displayError ?? t('messageStatusBadge.failedPost'))
       : status === 'failed' && transport === 'device'
-        ? t('messageStatusBadge.noAckTooltip')
+        ? connectionType === 'http' || connectionType === 'tcp'
+          ? t('messageStatusBadge.noAckTooltipWifi')
+          : t('messageStatusBadge.noAckTooltip')
         : displayError || t('messageStatusBadge.failed');
   const tooltipPrefix =
     transport === 'mqtt'
diff --git a/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.test.ts b/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.test.ts
index 09d160ee1..e5d051310 100644
--- a/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.test.ts
+++ b/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.test.ts
@@ -186,6 +186,51 @@ describe('meshtasticSdkRoutingErrorLog', () => {
     expect(updateMessageStatus).toHaveBeenCalled();
   });
 
+  it('does not fall back unmatched TIMEOUT onto a sole sending outbound', () => {
+    seedOutbound([{ packetId: 55, timestamp: Date.now() }]);
+    const applied = applyMeshtasticOutboundRoutingErrorFromLog(
+      'Packet 41841545 of type packet timed out',
+      { myNodeNum: 42, identityId: IDENTITY },
+    );
+    expect(applied).toBe(false);
+    expect(updateMessageStatus).not.toHaveBeenCalled();
+  });
+
+  it('does not fall back unmatched MAX_RETRANSMIT onto a sole sending outbound', () => {
+    seedOutbound([{ packetId: 55, timestamp: Date.now() }]);
+    const applied = applyMeshtasticOutboundRoutingErrorFromLog(
+      'Error received for packet 985918657: MAX_RETRANSMIT',
+      { myNodeNum: 42, identityId: IDENTITY },
+    );
+    expect(applied).toBe(false);
+    expect(updateMessageStatus).not.toHaveBeenCalled();
+  });
+
+  it('does not fall back unmatched NO_RESPONSE onto a sole sending outbound', () => {
+    seedOutbound([{ packetId: 55, timestamp: Date.now() }]);
+    const applied = applyMeshtasticOutboundRoutingErrorFromLog(
+      'Error received for packet 424242: NO_RESPONSE',
+      { myNodeNum: 42, identityId: IDENTITY },
+    );
+    expect(applied).toBe(false);
+    expect(updateMessageStatus).not.toHaveBeenCalled();
+  });
+
+  it('still exact-matches MAX_RETRANSMIT when the wire id matches the outbound row', () => {
+    seedOutbound([{ packetId: 985918657, timestamp: Date.now() }]);
+    const applied = applyMeshtasticOutboundRoutingErrorFromLog(
+      'Error received for packet 985918657: MAX_RETRANSMIT',
+      { myNodeNum: 42, identityId: IDENTITY },
+    );
+    expect(applied).toBe(true);
+    expect(updateMessageStatus).toHaveBeenCalledWith(
+      IDENTITY,
+      '985918657',
+      'failed',
+      'chatPanel.routingErrors.timeout',
+    );
+  });
+
   it('does not apply when no outbound rows exist', () => {
     seedOutbound([]);
     const applied = applyMeshtasticOutboundRoutingErrorFromLog(
diff --git a/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.ts b/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.ts
index 17bce8a3c..71b240fb9 100644
--- a/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.ts
+++ b/src/renderer/lib/meshtastic/meshtasticSdkRoutingErrorLog.ts
@@ -154,9 +154,15 @@ function storeOutboundMessagesAsChat(identityId: string, myNodeNum: number): Cha
   return messageRecordsToChatMessages(records);
 }
 
+/** Errors that are unsafe to attribute via the single-sending fallback. */
+function shouldAvoidSendingFallback(errorName: string): boolean {
+  return errorName === 'TIMEOUT' || errorName === 'NO_RESPONSE' || errorName === 'MAX_RETRANSMIT';
+}
+
 function findOutboundTargetForWirePacketId(
   wirePacketId: number,
   ctx: ApplyMeshtasticOutboundRoutingErrorContext,
+  errorName: string,
 ): ChatMessage | undefined {
   const { myNodeNum, identityId, tempIdToWirePacketId } = ctx;
   if (!identityId) return undefined;
@@ -171,6 +177,14 @@ function findOutboundTargetForWirePacketId(
   // share-location Waypoint) — do not misattribute its NAK to a pending chat row.
   if (hasMeshtasticNonChatOutboundInFlight()) return undefined;
 
+  // Unmatched TIMEOUT / MAX_RETRANSMIT / NO_RESPONSE must not steal the sole
+  // in-flight chat row (leftover queue TIMEOUTs were marking unrelated broadcasts
+  // failed). TransportManager still fails the matching sendText by tempId when
+  // the NAK belongs to that send.
+  if (shouldAvoidSendingFallback(errorName)) {
+    return undefined;
+  }
+
   return findFallbackSendingOutbound(messages, myNodeNum);
 }
 
@@ -196,7 +210,7 @@ export function applyMeshtasticOutboundRoutingError(
   if (isMeshtasticNonChatWirePacketId(parsed.packetId)) {
     return false;
   }
-  const target = findOutboundTargetForWirePacketId(parsed.packetId, ctx);
+  const target = findOutboundTargetForWirePacketId(parsed.packetId, ctx, parsed.errorName);
   if (!target || !identityId) {
     return false;
   }
diff --git a/src/renderer/locales/cs/translation.json b/src/renderer/locales/cs/translation.json
index 1981236d3..a02e14f14 100644
--- a/src/renderer/locales/cs/translation.json
+++ b/src/renderer/locales/cs/translation.json
@@ -2215,7 +2215,8 @@
     "noAckTooltip": "Žádný ACK (zpráva mohla být stále vysílána; žádný jiný uzel v dosahu k potvrzení)",
     "failed": "Nezdařilo se",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Zařízení"
+    "tooltipPrefixDevice": "Zařízení",
+    "noAckTooltipWifi": "No mesh ACK — vaše WiFi/TCP spojení s rádiem je v pořádku. Zpráva mohla být stále odeslána; žádný jiný uzel LoRa nebyl potvrzen."
   },
   "modulePanel": {
     "sectionSent": "{{name}} odesláno. Zařízení se může krátce restartovat.",
diff --git a/src/renderer/locales/de/translation.json b/src/renderer/locales/de/translation.json
index 294afc575..216cbdf8b 100644
--- a/src/renderer/locales/de/translation.json
+++ b/src/renderer/locales/de/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "Kein ACK (Nachricht darf noch gesendet worden sein; kein anderer Knoten in Reichweite zu quittieren)",
     "failed": "Nicht bestanden",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Vorrichtung"
+    "tooltipPrefixDevice": "Vorrichtung",
+    "noAckTooltipWifi": "Kein Mesh-ACK — Ihre WiFi/TCP-Verbindung zum Radio ist in Ordnung. Die Nachricht wurde möglicherweise noch gesendet; kein anderer LoRa-Knoten wurde bestätigt."
   },
   "modulePanel": {
     "sectionSent": "{{name}} gesendet. Das Gerät kann kurzzeitig neu gestartet werden.",
diff --git a/src/renderer/locales/en/translation.json b/src/renderer/locales/en/translation.json
index 646653625..396e4d726 100644
--- a/src/renderer/locales/en/translation.json
+++ b/src/renderer/locales/en/translation.json
@@ -2382,6 +2382,7 @@
     "posted": "Posted",
     "failedPost": "Failed to post",
     "noAckTooltip": "No ACK (message may still have been broadcast; no other node in range to acknowledge)",
+    "noAckTooltipWifi": "No mesh ACK — your WiFi/TCP link to the radio is fine. Message may still have been sent; no other LoRa node acknowledged.",
     "failed": "Failed",
     "tooltipPrefixMqtt": "MQTT",
     "tooltipPrefixDevice": "Device"
diff --git a/src/renderer/locales/es/translation.json b/src/renderer/locales/es/translation.json
index 65b366321..c356f2827 100644
--- a/src/renderer/locales/es/translation.json
+++ b/src/renderer/locales/es/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "Sin ACK (es posible que el mensaje aún se haya transmitido; no hay otro nodo en el rango para reconocer)",
     "failed": "Error",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Dispositivo"
+    "tooltipPrefixDevice": "Dispositivo",
+    "noAckTooltipWifi": "Sin ACK de malla: su enlace WiFi/TCP a la radio está bien. Es posible que aún se haya enviado el mensaje; no se ha reconocido ningún otro nodo LoRa."
   },
   "modulePanel": {
     "sectionSent": "{{name}} enviado. El dispositivo puede reiniciarse brevemente.",
diff --git a/src/renderer/locales/fr/translation.json b/src/renderer/locales/fr/translation.json
index 220a1a3dd..52311a836 100644
--- a/src/renderer/locales/fr/translation.json
+++ b/src/renderer/locales/fr/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "Aucun ACK (le message peut encore avoir été diffusé ; aucun autre nœud à portée pour accuser réception)",
     "failed": "Échec",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Dispositif"
+    "tooltipPrefixDevice": "Dispositif",
+    "noAckTooltipWifi": "Pas d'ACK maillé — votre connexion WiFi/TCP à la radio est correcte. Le message peut encore avoir été envoyé ; aucun autre nœud LoRa n'a été accusé de réception."
   },
   "modulePanel": {
     "sectionSent": "{{name}} envoyé. L'appareil peut redémarrer brièvement.",
diff --git a/src/renderer/locales/id/translation.json b/src/renderer/locales/id/translation.json
index a25cfe8dd..6bb292c78 100644
--- a/src/renderer/locales/id/translation.json
+++ b/src/renderer/locales/id/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "Tidak ada ack (pesan mungkin masih disiarkan; tidak ada simpul lain dalam jangkauan untuk dikenali)",
     "failed": "Gagal",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Perangkat"
+    "tooltipPrefixDevice": "Perangkat",
+    "noAckTooltipWifi": "Tidak ada ack mesh — tautan WiFi/TCP Anda ke radio baik - baik saja. Pesan mungkin masih telah dikirim; tidak ada simpul LoRa lain yang diakui."
   },
   "modulePanel": {
     "sectionSent": "{{name}} terkirim. Perangkat mungkin akan reboot sebentar.",
diff --git a/src/renderer/locales/it/translation.json b/src/renderer/locales/it/translation.json
index 074b120d6..a47bdee2b 100644
--- a/src/renderer/locales/it/translation.json
+++ b/src/renderer/locales/it/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "Nessun ACK (il messaggio potrebbe essere ancora stato trasmesso; nessun altro nodo nel raggio d'azione da riconoscere)",
     "failed": "Non riuscito",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Dispositivo"
+    "tooltipPrefixDevice": "Dispositivo",
+    "noAckTooltipWifi": "Nessun ACK mesh: il tuo collegamento WiFi/TCP alla radio va bene. Il messaggio potrebbe essere stato ancora inviato; nessun altro nodo LoRa riconosciuto."
   },
   "modulePanel": {
     "sectionSent": "{{name}} inviato. Il dispositivo potrebbe riavviarsi brevemente.",
diff --git a/src/renderer/locales/ja/translation.json b/src/renderer/locales/ja/translation.json
index addd0afaf..387dcf288 100644
--- a/src/renderer/locales/ja/translation.json
+++ b/src/renderer/locales/ja/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "ACKなし（メッセージはまだブロードキャストされている可能性があります。確認応答する範囲内の他のノードはありません）",
     "failed": "失敗しました",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "デバイス"
+    "tooltipPrefixDevice": "デバイス",
+    "noAckTooltipWifi": "メッシュACKなし—無線へのWi - Fi/TCPリンクは問題ありません。メッセージはまだ送信されている可能性があります。他のLoRaノードは確認応答していません。"
   },
   "modulePanel": {
     "sectionSent": "{{name}} が送信されました。デバイスが短時間再起動する場合があります。",
diff --git a/src/renderer/locales/ko/translation.json b/src/renderer/locales/ko/translation.json
index 87bc5683d..639eaba16 100644
--- a/src/renderer/locales/ko/translation.json
+++ b/src/renderer/locales/ko/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "ACK 없음 (메시지는 여전히 브로드캐스트되었을 수 있으며, 확인할 수 있는 범위에 있는 다른 노드는 없음)",
     "failed": "실패함",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "장치"
+    "tooltipPrefixDevice": "장치",
+    "noAckTooltipWifi": "메시 ACK 없음 — 라디오에 대한 WiFi/TCP 링크는 괜찮습니다. 메시지가 여전히 전송되었을 수 있습니다. 다른 LoRa 노드가 확인되지 않았습니다."
   },
   "modulePanel": {
     "sectionSent": "{{name}} 보냈습니다. 장치가 잠시 재부팅될 수 있습니다.",
diff --git a/src/renderer/locales/nl/translation.json b/src/renderer/locales/nl/translation.json
index 51457d7a2..21d488325 100644
--- a/src/renderer/locales/nl/translation.json
+++ b/src/renderer/locales/nl/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "Geen ACK (bericht kan nog steeds zijn uitgezonden; geen ander knooppunt binnen bereik om te bevestigen)",
     "failed": "Mislukt",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Toestel"
+    "tooltipPrefixDevice": "Toestel",
+    "noAckTooltipWifi": "Geen mesh ACK — uw WiFi/TCP-link naar de radio is prima. Mogelijk is er nog steeds een bericht verzonden; er is geen ander LoRa-knooppunt bevestigd."
   },
   "modulePanel": {
     "sectionSent": "{{name}} verzonden. Het apparaat kan kortstondig opnieuw opstarten.",
diff --git a/src/renderer/locales/pl/translation.json b/src/renderer/locales/pl/translation.json
index 2ae63ec88..854b0e704 100644
--- a/src/renderer/locales/pl/translation.json
+++ b/src/renderer/locales/pl/translation.json
@@ -2217,7 +2217,8 @@
     "noAckTooltip": "Brak ACK (komunikat mógł nadal zostać wyemitowany; brak innego węzła w zasięgu do potwierdzenia)",
     "failed": "Zakończone niepowodzeniem",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Urządzenie"
+    "tooltipPrefixDevice": "Urządzenie",
+    "noAckTooltipWifi": "Brak ACK siatki — Twoje łącze WiFi/TCP do radia jest w porządku. Wiadomość mogła nadal zostać wysłana; żaden inny węzeł LoRa nie został potwierdzony."
   },
   "modulePanel": {
     "sectionSent": "Wysłano: {{name}}. Urządzenie może się na chwilę zrestartować.",
diff --git a/src/renderer/locales/pt-BR/translation.json b/src/renderer/locales/pt-BR/translation.json
index e02c4a7ce..3b6a2edc4 100644
--- a/src/renderer/locales/pt-BR/translation.json
+++ b/src/renderer/locales/pt-BR/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "Sem ACK (a mensagem ainda pode ter sido transmitida; nenhum outro nó no intervalo para confirmar)",
     "failed": "Falha",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Dispositivo"
+    "tooltipPrefixDevice": "Dispositivo",
+    "noAckTooltipWifi": "Sem mesh ACK — seu link WiFi/TCP para o rádio está bom. A mensagem ainda pode ter sido enviada; nenhum outro nó LoRa foi reconhecido."
   },
   "modulePanel": {
     "sectionSent": "{{name}} enviado. O dispositivo pode reiniciar brevemente.",
diff --git a/src/renderer/locales/ru/translation.json b/src/renderer/locales/ru/translation.json
index 8018a0c8c..f8505f502 100644
--- a/src/renderer/locales/ru/translation.json
+++ b/src/renderer/locales/ru/translation.json
@@ -2215,7 +2215,8 @@
     "noAckTooltip": "Нет ACK (сообщение, возможно, все еще было передано; нет другого узла в диапазоне для подтверждения)",
     "failed": "Не удалось",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Устройство"
+    "tooltipPrefixDevice": "Устройство",
+    "noAckTooltipWifi": "Нет Mesh ACK — ваша связь WiFi/TCP с радиостанцией в порядке. Сообщение, возможно, все еще было отправлено; ни один другой узел LoRa не подтвержден."
   },
   "modulePanel": {
     "sectionSent": "{{name}} отправлено. Устройство может ненадолго перезагрузиться.",
diff --git a/src/renderer/locales/tr/translation.json b/src/renderer/locales/tr/translation.json
index a190d4dd1..bd13c047f 100644
--- a/src/renderer/locales/tr/translation.json
+++ b/src/renderer/locales/tr/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "ACK yok (mesaj hala yayınlanmış olabilir; onaylanacak başka bir düğüm yok)",
     "failed": "Başarısız",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Cihaz"
+    "tooltipPrefixDevice": "Cihaz",
+    "noAckTooltipWifi": "Ağ ACK'si yok; telsize WiFi/TCP bağlantınız iyi durumda. Mesaj hala gönderilmiş olabilir; başka hiçbir LoRa düğümü onaylanmadı."
   },
   "modulePanel": {
     "sectionSent": "{{name}} gönderildi. Cihaz kısa süreliğine yeniden başlatılabilir.",
diff --git a/src/renderer/locales/uk/translation.json b/src/renderer/locales/uk/translation.json
index 24ffd8875..d5d540ed9 100644
--- a/src/renderer/locales/uk/translation.json
+++ b/src/renderer/locales/uk/translation.json
@@ -2215,7 +2215,8 @@
     "noAckTooltip": "Немає ACK (повідомлення, можливо, все ще транслювалося; немає іншого вузла в діапазоні для підтвердження)",
     "failed": "Помилка",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "Пристрій"
+    "tooltipPrefixDevice": "Пристрій",
+    "noAckTooltipWifi": "Без Mesh ACK — ваше посилання WiFi/TCP на радіо в порядку. Можливо, повідомлення все ще було надіслано; жоден інший вузол LoRa не підтверджено."
   },
   "modulePanel": {
     "sectionSent": "{{name}} надіслано. Пристрій може ненадовго перезавантажитися.",
diff --git a/src/renderer/locales/zh/translation.json b/src/renderer/locales/zh/translation.json
index 746f27799..8a7347e72 100644
--- a/src/renderer/locales/zh/translation.json
+++ b/src/renderer/locales/zh/translation.json
@@ -2213,7 +2213,8 @@
     "noAckTooltip": "无确认（消息可能仍已广播；范围内没有其他节点需要确认）",
     "failed": "失败",
     "tooltipPrefixMqtt": "MQTT",
-    "tooltipPrefixDevice": "设备"
+    "tooltipPrefixDevice": "设备",
+    "noAckTooltipWifi": "无网状确认—您可以使用无线网络/TCP连接到收音机。消息可能仍已发送；未确认其他LoRa节点。"
   },
   "modulePanel": {
     "sectionSent": "{{name}}已发送。设备可能会短暂重新启动。",