Re: TLS Certificate Lifetime Now 200 Days

And do NOT assume that your certificate provider will follow the above
guidelines. I've discovered that some of them dropped their maximum
deadlines earlier. For example one dropped to 200 days about a month
early. For those that try to wait until a week or less before their certs
expire so they can get a longer expiration that can be a nasty surprise.

On Wed, Mar 18, 2026 at 12:08 PM Pete Helgren <pete@xxxxxxxxxx> wrote:

No surprise there. It's heading toward 47 days in 2029

1. As of March 15, 2026, the maximum lifetime for a TLS
certificate will be 200 days.
2. As of March 15, 2027, the maximum lifetime for a TLS
certificate will be 100 days.
3. As of March 15, 2029, the maximum lifetime for a TLS
certificate will be 47 days.

Been using LetsEncrypt for many years with a 90 day lifetime and
automated it with DCM for LetsEncrypt (https://ledcm.valadd.com/) which
I have *just* about finished for release as an open source project (just
working on documentation at this point). Maybe IBM would be interested....

Pete Helgren
www.petesworkshop.com
CISSP - MSCM
GIAC Cloud Penetration Tester
AWS Certified Cloud Practitioner
Microsoft Certified: Azure Fundamentals

On 3/17/2026 5:14 PM, Jack Woehr via MIDRANGE-L wrote:

TLS Certificate Lifetime Now 200 Days

https://www.helpnetsecurity.com/2026/03/16/globalsign-tls-certificate-lifecycle-management

Jack Woehr
Independent Consulting Programmer

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