Chrome Will Drop Client Authentication Support in New SSL Certificates by June 15, 2026
What’s Changing? Google is updating its Chrome Root Store Policy (v1.6) so that publicly‑trusted SSL/TLS certificates issued on or after June 15, 2026, can only include the serverAuth extended key usage (EKU). Certificates that also include clientAuth (used for client authentication in mutual TLS) will no longer be trusted by Chrome Key Dates to Know DateRequirementJune 15, 2025Chrome Root Store stops accepting new intermediate CAs that combine serverAuth + clientAuth .Sept 15, 2025Recommended deadline for CAs to shift to dedicated server-auth PKI hierarchies .June 15, 2026All new public SSL certs must include only serverAuth; legacy certs remain valid until they expire . Why This Matters Browser Security & Trust: Separating server and client authentication in certificate chains enhances trust and reduces security risks CA Industry Alignment: Major CAs like DigiCert,…
