Does anyone have an example of a site protected with a new Let’s Encrypt certificate that works with Chrome + Windows XP SP3?
We’ve issued a new certificate for act.democracyforamerica.com and now receive NET::ERR_CERT_AUTHORITY_INVALID in Chrome. The detailed error is “This certificate cannot be verified up to a trusted certification authority”.
The chain is:
Let’s Encrypt Authority X3
DST Root CA X3
and DST Root CA X3 is the certificate that is not in the trust store.