Cloudflare incident
Issue with TLS certificates using Lets Encrypt CA
Cloudflare experienced a minor incident on June 2, 2026 affecting SSL Certificate Provisioning, lasting 1d 4h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Jun 02, 2026, 12:25 AM UTC
Cloudflare has identified an issue affecting a subset of Let's Encrypt certificates, in which unsupported CA bundling may result in TLS connectivity issues for some visitors. Customers requiring immediate resolution may order a replacement certificate; re-issuance from the same Certificate Authority will resolve the issue. Customer action is not required for a permanent fix — Cloudflare engineering is rebuilding all impacted certificate chains, and affected certificates will be automatically restored to a valid state.
- resolved Jun 03, 2026, 05:01 AM UTC
This incident has been resolved.