Update Root Certificate (Let's Encrypt)

After the Let’s Encrypt root certificate expired at the end of September 2021, a few people are still experiencing a certificate expired warning on our websites. We have updated our websites with the current certificate; however, some users may need to update the certificate on their computers. Specifically, we have seen this issue with Mac OS.

Steps to resolve:

1. Download and open: https://letsencrypt.org/certs/lets-encrypt-r3.pem. The Add Certificates window will pop open.
2. Under keychain, change the selection to System.
3. Click Add. If prompted, enter your computer password.
4. Restart the browser