# Amazon Web Services: Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)

> Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1). Detected 2026-11-11 by Rewindex: what changed on Amazon Web Services’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/r10c950a016c608
Last updated: 2026-11-11T21:33:17Z

**Summary:** _summary pending_
- Kind: Silent edit · Label: Wording only (typesafe/jev-1.13-20260917)
- Changed: 2026-11-11 21:33 UTC · Detected: 2026-11-11 21:33 UTC
- [Source: https://health.aws.amazon.com/health/status](https://health.aws.amazon.com/health/status)
- [Company: Amazon Web Services](https://rewindex.com/company/aws.md)
- Versions: before incident\_version:715/ap-northeast-1-aws\_ec2\_operational\_issue\_ec778\_efc270b4609@defadde24a90 → after incident\_version:715/ap-northeast-1-aws\_ec2\_operational\_issue\_ec778\_efc270b4609@9580b0687712
- Change 17 of 21 for this incident

Incident page (full timeline): [Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/company/aws/incidents/ap-northeast-1-aws_ec2_operational_issue_ec778_efc270b4609.md)
## What changed

**1. Changed: Update** (resolved) · 2026-11-11 21:11 UTC

```diff
+ 日本時間 2026 年 11 月 11 日 午後 11 時 46 分から 2026 年 11 月 12 日 午前 2 時 46 分 (太平洋標準時 午前 6 時 46 分から午前 9 時 46 分) にかけて、主に単一のアベイラビリティーゾーン (apne1-az1) において、API エラー率の上昇および起動失敗が発生しておりました。また、ECS および Fargate のタスク起動失敗、ELB のプロビジョニング遅延、NAT Gateway の作成および関連付け解除ワークフローの失敗、Managed Flink アプリケーションの状態遷移の遅延など、他サービスにも影響が発生しておりました。稼働中の EC2 インスタンスおよび既存のワークフローには影響はございませんでした。この時間帯において、影響を受けているアベイラビリティーゾーンでは EC2 および EBS のヘルスデータが欠損または遅延し、CloudWatch アラームが INSUFFICIENT_DATA 状態に移行し、DescribeInstanceStatus API が Insufficient Data を返しておりました。 根本原因を特定し、日本時間 2026 年 11 月 12 日 午前 0 時 47 分までに緩和策の実施を開始しました。日本時間 午前 2 時 46 分には API の広範な回復が見られ、新規 EC2 インスタンスの起動が成功するようになりました。完全な復旧を監視する中で、影響を受けた単一のアベイラビリティーゾーンにおける新規起動インスタンスで接続の問題が発生していることを確認し始めました。インスタンス間の接続、および影響発生前に起動されたインスタンスへの接続は影響を受けておりませんでした。この問題が最初の問題と同一の根本原因であることを特定することができました。 接続の問題を軽減するために複数の対策を並行して実施し、日本時間 午前 4 時 51 分に接続の問題の回復の最初の兆候を確認し、日本時間 午前 5 時 31 分に完全に回復いたしました。問題は解決され、サービスは正常に稼働しております。 |
  Between 6:46 AM and 9:46 AM PST, we…
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-11-11 15:53 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/rccb24b6a9bb7d3.md) | Normal progress |
| 2026-11-11 16:23 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/re4c403d98a6c37.md) | Normal progress |
| 2026-11-11 16:33 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/rbe7c67b1585440.md) | Wording only |
| 2026-11-11 16:43 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/rb45a3ccc585ded.md) | Normal progress |
| 2026-11-11 16:53 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r13befa3a8f20e0.md) | Wording only |
| 2026-11-11 17:23 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r8079208ced7460.md) | Normal progress |
| 2026-11-11 17:33 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r56b6d7321c88f6.md) | Normal progress |
| 2026-11-11 17:43 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/rcb2562f9ecb943.md) | Normal progress |
| 2026-11-11 18:03 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r3ab4f32435057a.md) | Normal progress |
| 2026-11-11 18:13 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r74360b3451c50d.md) | Wording only |
| 2026-11-11 19:03 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r0c67c7bb757630.md) | Normal progress |
| 2026-11-11 19:13 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r24f8e175699117.md) | Wording only |
| 2026-11-11 19:33 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r8091f8b5af4177.md) | Wording only |
| 2026-11-11 20:03 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/ra848aad2479d00.md) | Normal progress |
| 2026-11-11 20:13 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r502da0763f39e1.md) | Wording only |
| 2026-11-11 21:13 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r12d97e53213c05.md) | Normal progress |
| 2026-11-11 21:33 UTC | Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1) (this change) | Wording only |
| 2026-11-12 01:53 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r3b2e59886f59df.md) | minor edit |
| 2026-11-12 02:23 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/rbb4b32ee4336f6.md) | Wording only |
| 2026-11-12 03:33 UTC | [Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/r3508aeecbb22cf.md) | Wording only |
| 2026-11-12 06:03 UTC | [Incident updated: Elevated API issues and Launch Failures (ap-northeast-1)](https://rewindex.com/change/rdd315c1d6733a7.md) | Wording only |

Previous: [change](https://rewindex.com/change/r12d97e53213c05.md) · Next: [change](https://rewindex.com/change/r3b2e59886f59df.md) · All Amazon Web Services changes: [timeline](https://rewindex.com/company/aws/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._

## Cite this

Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1) on Amazon Web Services’s status page, changed 2026-11-11 21:33 UTC (change 17 of 21).

- Canonical URL: https://rewindex.com/change/r10c950a016c608
- Citation: Amazon Web Services, “Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1)” (2026-11-11 21:33 UTC). Archived by Rewindex: https://rewindex.com/change/r10c950a016c608 (CC BY 4.0).
- Markdown link: `[Amazon Web Services: Incident silently edited: Elevated API issues and Launch Failures (ap-northeast-1) (2026-11-11)](https://rewindex.com/change/r10c950a016c608)`


---
Canonical: https://rewindex.com/change/r10c950a016c608 · Markdown: https://rewindex.com/change/r10c950a016c608.md · JSON: https://rewindex.com/api/v1/changes/r10c950a016c608 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-12T15:21:46.958Z