All customer instances throwing ERR_CERT_AUTHORITY_INVALID

Support
1

Some users at our hosted site (discourse.julialang.org) have reported just seeing a white page when trying to access the site this morning, with their console logs littered with the error:

Failed to load resource: net::ERR_CERT_AUTHORITY_INVALID

Upon debugging with them further, they report the same problem with any link they click on here: Discourse customers | Discourse - Civilized Discussion

Interestingly, meta.discourse.org is the only discourse board that works for them.

2

Not sure what was happening here, but it seemed to be limited to one corporate environment and has silently resolved itself.

3

That sounds like that the corporate environment CA bundle doesn’t trust the current root certificate for Let’s Encrypt. It’s something that can happen with outdated CA bundles or outdated OSs.