TLS certificates: maximum lifetime 200 days

Maximum validity 200 days on 15 Mar 2026, 7 months ago.

15 Mar 2026 7 months ago Already applies

TLS certificates: maximum lifetime 200 days

Maximum validity 200 days · Ballot SC-081v3 (Baseline Requirements) · CA/Browser Forum

MaritimeIndustryInfrastructure International Standard or protocol

Public TLS certificates issued from 15 March 2026 can be valid for at most 200 days, down from 398. Domain validation results can also be reused for at most 200 days. The schedule then drops to 100 days in 2027 and 47 days in 2029. Manual renewal stops being practical.

CA/Browser Forum Date reported, not yet checked against the official text.

What to do 0 of 4 done

Inventory every public certificate and where it is installed, including appliances and vessel gateways
Automate issuance with ACME or your CA's API
Monitor expiry with an alert well before the end date
Check that devices which pin a certificate can take a new one

Ticks are kept in this browser only. Sign in to the client portal to share them with your team.

Need this tracked for your fleet or plant?

In the client portal the same checklist is shared with your team, the ticks are kept, and the entry sits next to the registers that prove what you did.

Get in touch Back to the clock