Outage in Let's Encrypt
Let's Encrypt API Outage
Resolved Minor
July 21, 2025 - Started about 20 hours ago
- Lasted about 15 hours
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Outage Details
We are investigating an API outage.
Components affected
Let's Encrypt acme-staging-v02.api.letsencrypt.org (Staging) Let's Encrypt ocsp.staging-x1.letsencrypt.org (Staging) Let's Encrypt acme-v02.api.letsencrypt.org (Production) Let's Encrypt {e1,e2,r3,r4}.o.lencr.org & ocsp.int-x{3..4}.letsencrypt.orgLatest Updates ( sorted recent to last )
about 20 hours ago - at 07/21/2025 06:56PM
We are investigating an API outage.
about 14 hours ago - at 07/22/2025 01:16AM
Let's Encrypt is currently unavailable due to an outage of Let's Encrypt's internal DNS servers and subsequent cascading failures. We are taking corrective measures, and some issuance has resumed.
about 12 hours ago - at 07/22/2025 02:51AM
We have deployed mitigations for the failure of our internal DNS servers. Issuance of certificates is now succeeding, though we are still recovering from the resulting high traffic volumes.
Latest Let's Encrypt outages
[Staging] API Partial Service Disruption - about 2 months ago
API Partial Service Disruption - 2 months ago
Let's Encrypt API Service Disruption - 2 months ago
Let's Encrypt's API is temporarily offline - 5 months ago
Let's Encrypt is unable to validate domain names - 9 months ago
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