OpenStreetMap Ops Team@OSM_TechAre you suddenly receiving an unexpected certificate error from any http://OpenStreetMap.org service today? You likely need to add http://letsencrypt.org's ISRG Root X1 certificate to your cert trust store. Compatibility: https://letsencrypt.org/docs/certificate-compatibility/#platforms-that-trust-isrg-root-x1… Read more:scotthelme.co.ukLet's Encrypt's Root Certificate is expiring!On 30th September 2021, the root certificate that Let's Encrypt are currently using, the IdentTrust DST Root CA X3 certificate, will expire. You may or may not need to do anything about this Root CA...5:04 PM · Sep 30, 202111 Retweets9 Likes