Many Let's Encrypt renewals had errors today
摘要
该状态页记录了 Let's Encrypt 生产环境 API 在 6 月 18–19 日期间出现的降级表现，部分客户端在证书签发 / 续期过程中可能收到 400 或 500 错误，但多数请求仍然成功。问题与两个数据中心之间的上游网络事件有关，导致流量被重新路由，同时服务方在与上游 ISP 排查问题，并在 “冗余能力降低” 的情况下维持运行。随后状态更新显示系统整体仍在运行，但受网络影响稳定性下降。各主要组件（如 ACME API、门户与日志服务）状态显示为 operational，但存在短期性能波动与成功率下降情况。
荐读理由
Let's Encrypt 生产 API 出现部分服务中断，生产组件 acme-v02.api.letsencrypt.org 和 portal.letsencrypt.org 处于 Partial Service Disruption 状态，站点仍保持 Operational。你的 AI 项目或 CI/CD 流水线如果依赖 Let's Encrypt 签发证书，就可能遇到 400/500 错误，需要提前做错误重试或切换到备用 CA。
原文
Active Incident
Updated a few seconds ago
Updated a few seconds ago
Support for Let's Encrypt services is community-based and information on current status and outages can be found at: https://community.letsencrypt.org
API Degraded PerformanceOperational
Incident Status
Operational
Components
acme-v02.api.letsencrypt.org (Production), portal.letsencrypt.org (Production)
Locations
High Assurance Datacenter 1, High Assurance Datacenter 2
June 19, 2026 04:45 UTC
INVESTIGATING
We're operating normally, but with reduced redundancy. We continue to work with our upstream ISP to identify and resolve the issue.
June 18, 2026 16:35 UTC
INVESTIGATING
We re-routed traffic to bring success rates back to normal after an upstream network event disrupted traffic between two datacenters.
June 18, 2026 16:04 UTC
INVESTIGATING
Let's Encrypt's production API is experiencing degraded performance. Some clients may encounter 400 and 500 error responses. Most clients are still succeeding.
acme-v02.api.letsencrypt.org (Production)
Operational
acme-staging-v02.api.letsencrypt.org (Staging)
Operational
portal.letsencrypt.org (Production)
Operational
portal-staging.letsencrypt.org (Staging)
Operational
*.c.lencr.org (Production) **
Operational
stg-*.c.lencr.org (Staging) **
Operational
Website **
Operational
log.twig.ct.letsencrypt.org **
Operational
log.sycamore.ct.letsencrypt.org **
Operational
log.willow.ct.letsencrypt.org **
Operational
**
**
**
Manage Existing SubscriptionCreate New Subscription
Enter your Microsoft Teams webhook. View Instructions
Email address for managing subscription
Manage Existing SubscriptionCreate New Subscription
Slack channel ID
**Find the channel ID: **Select the channel in your Slack workspace. The channel ID is displayed in the browser URL.
**Example: **https://app.slack.com/client/T04SJBK1C/**C03SKGJ1P**
Email address
Manage Existing SubscriptionCreate New Subscription
这条对你有帮助吗？