Duolingo

Affected: Duolingo

1. investigating 2026-10-21 17:32 UTC

   We are currently investigating this incident.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-10-21 14:57 UTC

   We are currently investigating this incident.

2. investigating 2026-10-21 17:22 UTC

   We are continuing to investigate this issue.

3. resolved 2026-10-21 17:23 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-07-19 21:18 UTC

   We are currently investigating this incident.

2. resolved 2026-07-19 21:46 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-07-19 19:58 UTC

   We are currently investigating this incident.

2. resolved 2026-07-19 20:18 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-07-18 14:29 UTC

   We are currently investigating this incident.

2. resolved 2026-07-18 15:23 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-06-09 18:43 UTC

   We are investigating reports of issues with the Duolingo Android app

2. investigating 2026-06-09 18:44 UTC

   We are continuing to investigate this issue.

3. identified 2026-06-09 18:59 UTC

   The issue has been identified and a fix is being implemented.

4. identified 2026-06-09 19:00 UTC

   We have identified the issue and are implement a fix.

5. monitoring 2026-06-09 19:08 UTC

   A fix has been implemented and we are monitoring the results.

6. resolved 2026-06-09 19:16 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-05-27 16:22 UTC

   We are investigating errors with video call and role play.

2. resolved 2026-05-27 17:55 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-05-27 15:47 UTC

   We are investigating errors with Video Call and Roleplay.

2. resolved 2026-05-27 16:17 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-05-26 20:36 UTC

   We are currently investigating this incident.

2. resolved 2026-05-26 21:21 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-05-20 19:47 UTC

   We are currently investigating this incident.

2. resolved 2026-05-20 20:10 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-04-09 15:48 UTC

   We are currently investigating an issue starting video calls with Lily.

2. resolved 2026-04-09 16:07 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-04-09 00:47 UTC

   We are investigating issues with learners being able to start video calls with Lily.

2. resolved 2026-04-09 01:17 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-03-05 00:52 UTC

   We are currently investigating this issue.

2. resolved 2026-03-05 01:08 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-02-11 20:08 UTC

   We are investigating issues with leaderboards.

2. resolved 2026-02-11 23:30 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-01-21 07:46 UTC

   We are currently investigating this incident.

2. resolved 2026-01-21 08:05 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-01-20 21:25 UTC

   We are currently investigating this incident.

2. resolved 2026-01-20 21:58 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-01-15 11:41 UTC

   We are currently investigating this incident.

2. resolved 2026-01-15 11:54 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-01-14 20:37 UTC

   We are currently investigating this incident.

2. resolved 2026-01-14 21:24 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. identified 2026-01-13 16:23 UTC

   The issue has been identified and a fix is being implemented.

2. resolved 2026-01-13 16:58 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2026-01-13 10:18 UTC

   We are currently investigating this incident.

2. resolved 2026-01-13 10:30 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-12-21 14:24 UTC

   We are currently investigating this incident.

2. resolved 2025-12-21 14:58 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-12-06 17:29 UTC

   We are currently investigating this incident.

2. investigating 2025-12-06 18:49 UTC

   We are continuing to investigate this issue.

3. resolved 2025-12-06 18:50 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-11-26 14:37 UTC

   We are currently investigating this incident.

2. resolved 2025-11-26 14:57 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-11-20 17:38 UTC

   We are currently investigating this incident.

2. resolved 2025-11-20 17:46 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-11-11 18:34 UTC

   We are currently investigating this incident.

2. resolved 2025-11-11 19:19 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-11-06 12:26 UTC

   We are currently investigating this incident.

2. resolved 2025-11-06 12:39 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-11-05 15:22 UTC

   We are currently investigating this incident.

2. resolved 2025-11-05 15:34 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-11-04 14:01 UTC

   We are currently investigating this incident.

2. resolved 2025-11-04 14:11 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-30 01:49 UTC

   We are currently investigating this incident.

2. resolved 2025-10-30 02:19 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-28 14:43 UTC

   We are currently investigating this incident.

2. resolved 2025-10-28 16:24 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-26 01:02 UTC

   We are currently investigating this incident.

2. resolved 2025-10-26 01:06 UTC

   This incident has been resolved

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-23 15:52 UTC

   We are currently investigating this incident.

2. resolved 2025-10-23 16:05 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-20 09:59 UTC

   We are currently investigating this incident.

2. identified 2025-10-20 16:44 UTC

   We identified the cause of an ongoing incident impacting Duolingo and are currently awaiting recovery. Your streak will be protected.

3. monitoring 2025-10-20 21:35 UTC

   A fix has been implemented and we are monitoring the results.

4. resolved 2025-10-20 23:33 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Failure mode: A provider or third-party service this vendor depends on failed. Root cause: A failure at a provider or vendor they depend on. Tagged by claude-haiku-5-5 with high confidence (taxonomy v0.2).

1. resolved 2025-10-20 07:00 UTC

   Duolingo is currently experiencing issues and we are currently investigating. We've identified an issue with our Cloud Provider but are now seeing signs of recovery and continuing to work on mitigation and monitoring

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-17 15:05 UTC

   We are currently investigating this incident.

2. resolved 2025-10-17 15:40 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-10 14:28 UTC

   We are currently investigating this incident.

2. resolved 2025-10-10 15:04 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-09 13:44 UTC

   We are currently investigating this incident.

2. resolved 2025-10-09 14:03 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-10-06 20:45 UTC

   We are currently investigating this incident.

2. resolved 2025-10-06 20:59 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-09-29 17:35 UTC

   We are currently investigating this incident.

2. resolved 2025-09-29 19:26 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-09-29 10:47 UTC

   We are currently investigating this issue.

2. resolved 2025-09-29 12:36 UTC

   The leaderboards have been restored. All services are functioning normally.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-09-19 15:23 UTC

   We are currently investigating this issue.

2. resolved 2025-09-19 16:20 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-09-19 15:19 UTC

   We are currently investigating this incident.

2. resolved 2025-09-19 15:20 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-09-18 20:23 UTC

   We are currently investigating this incident.

2. resolved 2025-09-18 22:03 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: Data delayed, stale, lost or corrupted, or needing replay after recovery. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with medium confidence (taxonomy v0.2).

1. investigating 2025-09-13 19:27 UTC

   We are aware of an issue causing some learners’ streaks to appear reset or display incorrectly. Our team is actively investigating the cause and working to restore affected streaks.

2. monitoring 2025-09-13 20:40 UTC

   A fix has been implemented and we are monitoring the results.

3. resolved 2025-09-13 20:46 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-09-08 11:33 UTC

   We are currently investigating this incident.

2. resolved 2025-09-08 11:44 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-09-01 01:32 UTC

   We are currently investigating this incident.

2. resolved 2025-09-01 02:12 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-08-30 10:18 UTC

   We are currently investigating this incident.

2. resolved 2025-08-30 10:21 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-08-13 20:04 UTC

   We are currently investigating this incident.

2. resolved 2025-08-13 21:21 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-08-09 14:18 UTC

   We are currently investigating this incident.

2. resolved 2025-08-09 14:54 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-08-02 14:34 UTC

   We are currently investigating this incident.

2. resolved 2025-08-02 14:55 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-07-29 16:16 UTC

   We are currently investigating this issue.

2. resolved 2025-07-29 16:37 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.

Affected: Duolingo

Failure mode: The text does not say enough to tell. Root cause: The vendor does not say why it happened. Tagged by claude-haiku-5-5 with low confidence (taxonomy v0.2).

1. investigating 2025-07-29 15:02 UTC

   We are currently investigating this incident.

2. resolved 2025-07-29 15:15 UTC

   This incident has been resolved.

Excerpts are shortened. Read the full incident on Duolingo's status page.