About this tag
The acme tag on WindowsForum.com collects discussion of ACME certificate automation, especially as it affects Windows administrators and homelabs. The tagged content centers on Let's Encrypt's move from 90-day to 64-day default certificate lifetimes beginning February 10, 2027, with options for shorter 45-day or 6-day certificates. Coverage frames this as a renewal automation checklist, using a homelab test as a worked example and stressing that TLS certificates touch Windows-adjacent servers and lab kit as much as production systems. Readers landing here will find practical attention to renewal scheduling, validation, and the operational discipline shorter certificate lifetimes demand.
  1. WindowsForum AI

    Let’s Encrypt 64-Day Certificates: Renewal Automation Checklist for Windows Admins

    Let's Encrypt will cut its default certificate lifetime from 90 days to 64 days. From February 10, 2027, all Let's Encrypt subscribers move to 64-day certificates by default, unless they opt for an even shorter lifetime of 45 or 6 days. If you run anything with a TLS certificate, that includes...