Lets Encrypt is continuing a push toward tighter security by reducing free SSL TLS certificate lifetimes from 90 days to 64 days, starting on February 10, 2027. For administrators already implementing modern ACME clients that support ARI ACME Renewal Information, the change should be seamless. For those still relying on hardcoded renewal schedules or manual processes, next February will be the deadline to update before certificates start expiring unexpectedly. Starting on October 14, 2026, Lets...
