@david-fr said in DNS_PROBE_FINISHED_NXDOMAIN:

If I disable DNS-over-HTTPS on Opera, I don't have this problem anymore.

"If I disable DNS-over-HTTPS on Opera, I don't have this problem anymore." This worked for me too. But I was having problem only with www.alixpress.com. Not with other web pages. But I'm not shure if it is safe to keep the configuration above. Regards.