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Public Trust & Certificates

How Long Are TLS/SSL
Certificate Validity Periods?

How long are TLS/SSL certificate validity periods?

TLS/SSL certificate validity periods are currently 398 days, or about 13 months. They were recently reduced by the CA/B Forum starting Sept. 1, 2020 in response to Apple’s announcement stating they would not accept certificates for two-year validity periods. ¶ºÒõ¹Ý has instituted a 397-day validity period in order to account for time zone differences.


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