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minor✓ Resolved

TLS Connectivity Issues Affecting Subset of Let's Encrypt Certificates

Cloudflare•Fri, Jun 5, 2026, 05:22 PM
Status
resolved
Duration
10h 32m
Updates
3
Coverage
0 articles

INCIDENT TIMELINE

✓ ResolvedSat, Jun 6, 2026, 03:55 AM
This incident has been resolved.
monitoringSat, Jun 6, 2026, 03:42 AM
A fix has been implemented and we are monitoring the results.
identifiedFri, Jun 5, 2026, 05:28 PM
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.
investigatingFri, Jun 5, 2026, 05:22 PM
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.

📊 TECHNICAL DETAILS

Internal ID
74a6a697-5086-4ee5-9571-67bb0241e838
External ID
rsb9bsncwr64
🕐 Started
Fri, Jun 5, 2026, 05:22 PM
🔄 Last Updated
Sat, Jun 6, 2026, 03:55 AM
✓ Resolved
Sat, Jun 6, 2026, 03:55 AM
MINOR
Impact Level
10h 32m
Total Duration
3
Status Updates
Affected Components
SSL Certificate Provisioning
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