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Nonprofit certificate authority providing free TLS certificates for websites.
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The latest official observation is not fresh enough to confirm current service health.
Official provider statusOfficial maintenance active
Staging Remote Validation Maintenance — October 27, 2026 18:46 UTC Scheduled - We will be adding two additional remote validation perspectives to our staging environment per https://community.letsencrypt.org/t/lets-encrypt-is-adding-two-additional-remote-perspectives-for-domain-validation/252166. October 27, 2026 19:00 UTC Active - Staging remote validation infrastructure maintenance is starting now. October 27, 2026 20:00 UTC Completed - Staging remote validation infrastructure changes have been completed. Stay safe out there. Happy issuance!
Official provider statusOfficial maintenance active
API Database Maintenance — October 22, 2026 23:39 UTC Scheduled - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. October 22, 2026 23:39 UTC Active - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. October 22, 2026 23:44 UTC Completed - Database maintenance is complete.
Official provider status0 individual report entries in the last 24 hours. This list includes legacy imports; external source aggregates are shown in the chart.
Official status observations, not measured service uptime.
Official incidents, early warnings and community reports are identified separately. Early warning history covers only the last 24 hours. Dates use your time zone.
| Incident name | Duration | StartedUTC | Acknowledged | Severity |
|---|---|---|---|---|
| 0m | Yes | Minor | ||
| 0m | Yes | Minor | ||
| 0m | Yes | Minor | ||
| 0m | Yes | Minor | ||
| 0m | Yes | Major | ||
| 0m | Yes | Minor | ||
| 0m | Yes | Maintenance | ||
| 0m | Yes | Minor |
Uptimus 通过官方状态源监控 Lets Encrypt，并将事件、维护和组件健康状况统一为一致的服务状态。
此页面目前包含 12 个受监控组件、10 个事件、14 个维护窗口和 9 天已知历史。
Uptimus 是独立监控服务，与 Lets Encrypt 无关联。健康状态并不保证每位用户、设备或地区都未受影响。
当 Lets Encrypt 或受监控组件报告重大或关键中断时接收通知。 提醒可通过工作区启用的渠道发送，包括电子邮件、推送和已配置的集成。 可用历史包含 10 个事件，为提醒提供当前状态之外的背景。 最近收录的事件是“Issuance disruption”。
接收有关性能下降、部分影响和非完全中断的小型事件通知。 Uptimus 当前跟踪 Lets Encrypt 的 12 个组件: acme-v02.api.letsencrypt.org (Production) - High Assurance Datacenter 1, acme-v02.api.letsencrypt.org (Production) - High Assurance Datacenter 2, acme-staging-v02.api.letsencrypt.org (Staging) - High Assurance Datacenter 1, portal.letsencrypt.org (Production) - High Assurance Datacenter 1。 提醒可通过工作区启用的渠道发送，包括电子邮件、推送和已配置的集成。
Planned work published by the official provider.
October 27, 2026 18:46 UTC Scheduled - We will be adding two additional remote validation perspectives to our staging environment per https://community.letsencrypt.org/t/lets-encrypt-is-adding-two-additional-remote-perspectives-for-domain-validation/252166. October 27, 2026 19:00 UTC Active - Staging remote validation infrastructure maintenance is starting now. October 27, 2026 20:00 UTC Completed - Staging remote validation infrastructure changes have been completed. Stay safe out there. Happy issuance!
Started 2026年10月27日 UTC 20:00 · Ongoing
October 22, 2026 23:39 UTC Scheduled - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. October 22, 2026 23:39 UTC Active - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. October 22, 2026 23:44 UTC Completed - Database maintenance is complete.
Started 2026年10月22日 UTC 23:44 · Ongoing
October 15, 2026 03:20 UTC Scheduled - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. October 15, 2026 03:21 UTC Active - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. October 15, 2026 03:25 UTC Completed - Database maintenance is complete.
Started 2026年10月15日 UTC 03:25 · Ongoing
October 8, 2026 22:31 UTC Scheduled - We're performing maintenance in our staging environment, which may result in some ACME clients receiving timeouts or errors for brief periods. Our production environment will not be affected. October 8, 2026 22:32 UTC Active - We're performing maintenance in our staging environment, which may result in some ACME clients receiving timeouts or errors for brief periods. Our production environment will not be affected. October 9, 2026 01:10 UTC Completed - Staging maintenance is complete.
Started 2026年10月9日 UTC 01:10 · Ongoing
September 2, 2026 20:07 UTC Scheduled - We will be performing production database maintenance. Clients may experience delays or errors during this period. September 2, 2026 20:30 UTC Active - We are beginning maintenance work on the production database. September 2, 2026 22:27 UTC Active - Maintenance is taking longer than anticipated and may extend beyond the scheduled window by up to an hour. September 2, 2026 23:28 UTC Completed - Maintenance is complete!
Started 2026年9月2日 UTC 23:28 · Ongoing
August 24, 2026 19:14 UTC Scheduled - We will be performing production database maintenance. Clients may experience delays or errors during this period as traffic is shifted around. August 24, 2026 19:56 UTC Active - Production database maintenance is beginning. August 24, 2026 20:30 UTC Completed - Production database maintenance has been completed. Happy issuance.
Started 2026年8月24日 UTC 20:30 · Ongoing
July 28, 2026 23:10 UTC Scheduled - We're performing maintenance to our staging environment which may result in some ACME clients receiving timeouts for up to a 10 minute period. The production environment is not affected. July 28, 2026 23:10 UTC Active - We're performing maintenance to our staging environment which may result in some ACME clients receiving timeouts for up to a 10 minute period. The production environment is not affected. July 28, 2026 23:15 UTC Completed - Staging maintenance is complete.
Started 2026年7月28日 UTC 23:15 · Ongoing
July 28, 2026 20:47 UTC Scheduled - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. July 28, 2026 20:50 UTC Active - We're performing database maintenance which may result in some ACME clients receiving timeouts for up to a 10 minute period. July 28, 2026 20:52 UTC Completed - Database maintenance is complete.
Started 2026年7月28日 UTC 20:52 · Resolved 2026年7月28日 UTC 20:52
Downdetector 公共页面主要基于用户报告。Uptimus 还会在来源提供时结合官方事件、维护窗口和组件状态。
| 比较标准 | Uptimus | Downdetector |
|---|---|---|
| Lets Encrypt 的社区中断报告 | 已包含 | 已包含 |
| 区分个别报告和大范围中断的自适应基线 | 已包含 | 已包含 |
| 24 小时报表活动和区域中断视图 | 已包含 | 已包含 |
| 在一个工作区管理网站、状态提供商、Steam 游戏及 Android 应用和游戏 | 已包含 | 独立产品 |
| 从同一工作区发送邮件、推送和 Webhook 告警 | 已包含 | 独立产品 |
| Lets Encrypt 的官方事件更新和状态时间线 | 已包含 | 以用户报告为主 |
| 分别展示组件健康与维护窗口 | 已包含 | 公共页面功能有限 |
The current official status of Lets Encrypt cannot be verified. The latest stored provider observation indicated normal operation. 0 reports were recorded for Lets Encrypt in the last 24 hours. Last official check: .
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