Chrome and Edge: Not secure
Firefox: Error code: SEC_ERROR_UNKNOWN_ISSUER
I’m using free SSL certificates generated by the SSL certificates tool in the InfinityFree client area. I had no trouble installing the certificates but when I bring up my site in Chrome or Edge the site displays OK but the address bar shows “Not Secure”. When I click on the lock icon it says “Your connection to this site isn’t fully secure” but it also says “Certificate (valid)”. If I click on the certificate it correctly shows:
Issued to: jonfleming.com
Issued by: Let’s Encrypt Authority X3
Valid from 9/28/2020 to 12/27/2020
If I open my site in Firefox I get more information. The site does not come up and instead I get a warning that says “Warning: Potential Security Rish Ahead”. Clicking the Advanced… button shows more detail that says:
"Someone could be trying to impersonate the site and you should not continue.
Websites prove their identity via certificates. Firefox does not trust jonfleming.com because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates.
Error code: SEC_ERROR_UNKNOWN_ISSUER"
I have 2 other sites that are using certificates installed the same way and they are working great. Not sure what’s going on with this one.