Let’s Encrypt cuts certificate lifetimes to 64 days starting February 2027
AI-rewritten: This is a summary of an article from Ars Technica, rewritten by AI (Qwen, running locally) to make it easier to read. The facts come from the original article – read it for the full story.
Nick Indge
• October 8, 2026
Let’s Encrypt is reducing the lifetime of free SSL/TLS certificates from 90 days to 64 days, starting on February 10, 2027. The organization plans to begin testing these shorter certificates on October 14, allowing interested users to opt in before the change goes live for everyone. This adjustment aims to push more users toward full ACME automation rather than relying on hardcoded renewal schedules or manual processes that may cause unexpected expirations.