TLS Connectivity Issues Affecting Subset of Let's Encrypt Certificates
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TLS Connectivity Issues Affecting Subset of Let's Encrypt Certificates Cloudflare operates global DNS, CDN, WAF, and edge network services. Outages here often affect many sites and APIs that sit behind their network.
resolved · 6 Jun 2026, 03:53 UTC
This incident has been resolved.
monitoring · 6 Jun 2026, 03:42 UTC
A fix has been implemented and we are monitoring the results.
identified · 5 Jun 2026, 17:28 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.
investigating · 5 Jun 2026, 17:22 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.
5
Related incidents
10h 30m
This incident
1h 26m
Avg. resolution time
Slower
vs. average
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