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) Março 11, 2026, 2:27pm 4

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

Tópico		Respostas	Visualizações
Link preview not working for specific site Support	10	2395	13 de Dezembro de 2019
Onebox error but OG tag present Support	2	520	3 de Janeiro de 2021
Website Links pasted into a Topic Feature	5	1179	18 de Setembro de 2021
Why Do Some Blog Posts in Discourse Have A Preview? Support	7	2305	22 de Outubro de 2019
Link-image not shown Self-hosting unsupported-install	16	532	16 de Junho de 2024

Por que o Discourse não consegue recuperar dados OpenGraph?

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