The CA/Browser Forum approved Ballot 193 which reduces the maximum validity period (or ‘lifetime’) for Domain Validated (DV) and Organization Validated (OV) certificates from 39 months to 27 month (825 days).
You will no longer be able to order a 3-year certificate after February 20, 2018.
Important note: This is an industry-wide change required of all Certificate Authorities. If you currently have a certificate that is valid for 3-years or more, it will continue to work as intended for the remainder of the certificate’s term, and no action is required.
If you must replace your 3-year certificate for any reason after February 28th, 2018, you will receive a replacement certificate with the remaining term left on your original certificate or 825 days maximum.
For FAQs, see INFO4906
Brand Specific Certificate Replacement Instructions are below:
Symantec Trust Center account
Symantec Trust Center Enterprise
Thawte Certificate Center (TCC)
Thawte Certificate Center Enterprise (TCCE)
GeoTrust Security Center (GSC)
GeoTrust Enterprise Security Center (GESC)
RapidSSL Security Center