Sorry to hear you’re facing problems
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Nextcloud version _(eg, 21.0.3)
Operating system and version _(eg, Ubuntu 20.04)
Nginix reverse proxy.
I have ports 80/443 forwarded to nginx reverse proxy VM
I have nginx proxy_pass to nextcloud VM IP
I have subdomain A record setup and points to nextcloud.mysite.com etc.
No SSL or anything just Ubuntu snap install
Android app can get to login screen, allows me to login, and then stuck at GRANT ACCESS screen.
Android then sort of times out and the android displays the following error message.
" webpage not available" page at http://192.x.x.x/index.php.login could not be loaded because net:ERR_ADDRESS_UNREACHABLE
So I read all the documents about trusted_domains and trusted_proxy and massive amounts of things on the web that I also tried. No effect for android
I know it’s related to the proxy.
If point the router to nextcloud VM directly. Then turn off the proxy and reinstall nextcloud snap directly. I can login with my domain and everything works with a single VM setup and router only. It’s when I introduce the nginix reverse proxy, and point router to proxy instead that I get the android problem.
All works on android with direct nextcloud install and nothing more then port forwards to the nextcloud VM. Everything just works without ssl or port 443 or anything.
When logging from Android with that simple install, it just asks me to trust and I click yes and move on to the login and grant access etc. Come right up as it should.
However, with port forward to proxy and reinstall nextcloud snap on VM Android doesn’t like it nor my subdomain and I get that error as listed above.
Thanks for any help and/or knowledge about this subject.