4 Critical Steps in Advance of 47-Day SSL/TLS Certificates

The CA/Browser Forum will shorten SSL/TLS certificate maximum validity—falling to 200 days in March 2026 and 47 days by 2029—and this advisory recommends a 100-day readiness plan: perform exhaustive certificate discovery across internal and external assets, map vendor-specific certificate dependencies, implement automation (e.g., ACME, SCEP, APIs) and certificate lifecycle management, and establish robust testing, rollback, and deployment processes to prevent outages during high-frequency renewals.