Cannot open documents as of 26.0.0

[wwe]

Sounds similar to this issue (even the solutions doesn’t make sense for me):

Opening documents fail because of content security policy violation

I recently setup a new NextCloud 25 environment which i now also exposed to the internet thru a reverse proxy (nginx). For clarity the reverse-proxy and the NextCloud instance (with built-in-CollaboraOnlineDevelopmentEdition) live in different containers/VM’s. For that reason they also have different hostnames/FQDN. Because of the reverse proxy I had to set the overwritehost field in the NextCloud config.php to the host-name/FQDN of the reverse proxy. In NextCloud this all works just fine and…

additionally

@maxxer

-e 'domain=cloud\\.ufficyo\\.com'

this settings is outdated - newer Collabora versions use different method to configure allowed systems (and 1st system is always allowed).

Important changes regarding COOL/CODE docker versions from v21.11.3.6 on (multiple domains setup)

please review Nextcloud Collabora integration as well.