Outage in Let's Encrypt
Issuance disruption
Resolved Minor
October 19, 2026 - Started 21 days ago
- Lasted 28 minutes
Incident Report
Summary AI Generated
Let's Encrypt experienced a 28-minute disruption affecting certificate issuance and renewals across both its production and staging APIs. Users were unable to issue or renew certificates due to elevated validation failure rates. The team identified the root cause during the incident and resolved it within approximately 28 minutes.
We're seeing elevated rates of validation failures that shouldn't be happening. We're investigating, and expect to resolve the issue soon.
Components affected
Let's Encrypt acme-staging-v02.api.letsencrypt.org (Staging) Let's Encrypt acme-v02.api.letsencrypt.org (Production)Trusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
21 days ago - at 10/20/2026 12:28AM
We're seeing elevated rates of validation failures that shouldn't be happening. We're investigating, and expect to resolve the issue soon.
21 days ago - at 10/20/2026 12:41AM
We've identified the problem that's affecting issuance success rates, and expect to solve it within the next few minutes.
Latest Let's Encrypt outages
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Staging: Issuance stopped for incident drill - 8 months ago
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