Outage in Let's Encrypt
API Partial Service Disruption
Resolved Minor
August 27, 2025 - Started 2 months ago
- Lasted about 7 hours
Incident Report
In the course of shifting traffic away from a data center to carry out routine maintenance, we observed high error rates and HTTP 503s still being served out of that location. We have have determined that traffic was not properly redirected and have taken action to complete the shift. Traffic patterns appear to be returning to normal, but we will continue to monitor the situation until maintenance is complete and traffic shaping has returned to normal as well.
Components affected
Let's Encrypt acme-staging-v02.api.letsencrypt.org (Staging) Let's Encrypt acme-v02.api.letsencrypt.org (Production) Let's Encrypt WebsiteNeed to monitor Let's Encrypt outages?
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Latest Updates ( sorted recent to last )
2 months ago - at 08/27/2025 05:55PM
In the course of shifting traffic away from a data center to carry out routine maintenance, we observed high error rates and HTTP 503s still being served out of that location. We have have determined that traffic was not properly redirected and have taken action to complete the shift. Traffic patterns appear to be returning to normal, but we will continue to monitor the situation until maintenance is complete and traffic shaping has returned to normal as well.
2 months ago - at 08/27/2025 06:36PM
Traffic shaping has been completed, all requests should complete as normal.
Latest Let's Encrypt outages
Production API Disruption - about 1 month ago
Let's Encrypt API Outage - 3 months ago
[Staging] API Partial Service Disruption - 5 months ago
API Partial Service Disruption - 5 months ago
Let's Encrypt API Service Disruption - 6 months ago
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