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

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 09/10/2026, 00:58:25 UTC.

Briefings

Let's Encrypt is reducing free SSL/TLS certificate lifetimes from 90 days to 64 days, effective February 10, 2027. The change targets administrators using modern ACME clients with ARI support, while those relying on hardcoded schedules must update by February. Testing begins October 14, 2026, allowing users to opt-in before production deployment. Prior to this initiative, certificates were typically valid for one to three years.

Key points

• Let's Encrypt will reduce free SSL/TLS certificate lifetimes from 90 days to 64 days, effective February 10, 2027.

Context and limitations

Coverage is limited to the specific policy change; testing phase details and user opt-in mechanisms are described but not fully detailed.

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