Let's Encrypt incident

API Degraded Performance

Minor Ongoing View vendor source →

Let's Encrypt is currently experiencing a minor incident affecting acme-v02.api.letsencrypt.org (Production) and portal.letsencrypt.org (Production) and 1 more component, which began 2h ago. The vendor's full update timeline is below.

Started
Jun 18, 2026, 04:04 PM UTC
Resolved
Ongoing
Duration
● 2h 6m
Detected by Pingoru
Jun 18, 2026, 04:04 PM UTC

Affected components

acme-v02.api.letsencrypt.org (Production)portal.letsencrypt.org (Production)portal.letsencrypt.org (Production) (High Assurance Datacenter 2)portal-staging.letsencrypt.org (Staging) (High Assurance Datacenter 1)

Update timeline

  1. investigating Jun 18, 2026, 04:04 PM UTC

    Let's Encrypt's production API is experiencing degraded performance. Clients may encounter 400 and 500 error responses. We are actively investigating the issue.

  2. investigating Jun 18, 2026, 04:35 PM UTC

    We have taken measures to stabilize API performance while we investigate networking issues between our two high assurance data centers.