When writing in topics in our Discourse site, when pasting some links, Discourse cannot retrieve OpenGraph (OneBox) information. We get an error like this (see also in screenshot): >Sorry, we were unable to generate a preview for this web page, because the following oEmbed / OpenGraph tags could no…

[imagem] wlandgraf: When writing in topics in our Discourse site, when pasting some links, Discourse cannot retrieve OpenGraph (OneBox) information. We get an error like this (see also in screenshot): Hi there - i tested that particular link you posted and it oneboxes as expected. clearly thi…

@Lilly thank you for your response. I have version `2026.01.0-latest`. I can update to `2026.2.0` of course, but my version is not that old. Yes, all other oneboxes work in my forum. Just that ones don’t work. About my onebox settings, they are all default. If I click “Only show overriden” nothing…

Ok, I found the problem, it looks like Discourse server doesn’t have the recent certificate chain used by the server.

Por que o Discourse não consegue recuperar dados OpenGraph?

Suporte

wlandgraf (Wagner Landgraf) 11 Março , 2026 14:27 4

Ok, encontrei o problema, parece que o servidor do Discourse não tem a cadeia de certificados recente usada pelo servidor.

Tópico		Respostas	Vistas
Link preview not working for specific site Support	10	2499	13 Dezembro , 2019
Onebox error but OG tag present Support	2	543	3 Janeiro , 2021
Website Links pasted into a Topic Feature	5	1238	18 Setembro , 2021
Why Do Some Blog Posts in Discourse Have A Preview? Support	7	2502	22 Outubro , 2019
Link-image not shown Self-hosting unsupported-install	16	642	16 Junho , 2024

Por que o Discourse não consegue recuperar dados OpenGraph?

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