Minor ImpactLast updated: May 31, 2026, 8:55 AM UTCRefreshed just now

Issues with TLS certificates using Lets Encrypt CA

Started

May 31, 2026, 3:16 AM UTC

Resolved

May 31, 2026, 8:55 AM UTC

Timeline

ResolvedMay 31, 2026, 8:55 AM UTC
This incident has been resolved.
IdentifiedMay 31, 2026, 6:41 AM UTC
The issue has been identified and a fix is being implemented. Customers are advised to change to a different Certificate Authority as a workaround.
InvestigatingMay 31, 2026, 3:16 AM UTC
Cloudflare is investigating issues with Let's Encrypt certificates. Some visitors may experience TLS connectivity issues due to potentially unsupported CA bundling for a subset of Cloudflare customers. Customers are advised to change to a different Certificate Authority as a workaround.