Important Changes Ahead: Let’s Encrypt to Update Root Certificates and Discontinue Client Auth
On May 13, 2026, Let’s Encrypt will migrate to its Generation Y certificate hierarchy, marking a significant change in its operations. This transition involves switching the default ACME profile to issues from new root certificates, impacting the classic profile that most hosting operators and their customers typically use. Additionally, on this date, a new opt-in 45-day certificate option will be introduced, and client authentication certificates will be completely removed by July 8, 2026. Hosting providers must ensure that their renewal automation can handle this transition effectively.
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