Technology United States

Let's Encrypt cuts certificate lifetimes to 64 days starting February 2027

Let's Encrypt is continuing a push toward tighter security by reducing free SSL/TLS certificate lifetimes from 90 days to 64 days, starting February 10, 2027.

By The News Engine Desk Based on reporting by Ars Technica

9 Oct 2026, 01:27 IST Updated 2 hours ago 1 min read 0 views

Image accompanying the story: Let's Encrypt cuts certificate lifetimes to 64 days starting February 2027 — Image: Getty Images | Yuichiro Chino · via Ars Technica

Ars Technica reports: Let's Encrypt is continuing a push toward tighter security by reducing free SSL/TLS certificate lifetimes from 90 days to 64 days, starting 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, February will be the deadline to update before certificates start expiring unexpectedly.

This technology story centres on the United States. Names and organisations mentioned in the coverage include Let's Encrypt, ACME Renewal Information and SSL.

Why it matters

Changes in the tech sector often reach consumers quickly through the devices, apps and online services they use every day.

Key details

Location: United States · Americas
Reported by: Ars Technica
First reported: 9 Oct 2026, 01:27 IST
Key names: Let's Encrypt, ACME Renewal Information, SSL, TLS
Section: Technology
Figure cited: Starting on October 14, Let's Encrypt will begin testing the 64-day certificates, and interested users can opt in to test their… (Ars Technica)