SSL cert “err_cert_authority_invalid” on mobile chrome only

Question

Domain: https://www.amz2btc.com

Analysis from SSL Labs: https://www.ssllabs.com/ssltest/analyze.html?d=amz2btc.com

All my desktop browsers open this fine. Mob

Answer 1

if you're like me who is using AWS and CloudFront, here's how to solve the issue. it's similar to what others have shared except you don't use your domain's crt file, just what comodo emailed you.

cat COMODORSADomainValidationSecureServerCA.crt COMODORSAAddTrustCA.crt AddTrustExternalCARoot.crt > ssl-bundle.crt

this worked for me and my site no longer displays the ssl warning on chrome in android.