Let's Encrypt is one of the most popular TLS Certificate Authorities. I have conflicting information about its certificates life-time. In this link it says 90-days. In one research paper I read 1 month. Can you please inform me what is the correct maximum life-time for Let's Encrypt issues certificates?
What is the lifetime for Let’s Encrypt certificates? For how long are they valid?
Our certificates are valid for 90 days. You can read about why here.
There is no way to adjust this, there are no exceptions. We recommend automatically renewing your certificates every 60 days.
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