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Issues accessing Jellyfin over HTTPS from LAN with iOS/Google TV apps - Printable Version

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+---- Thread: Issues accessing Jellyfin over HTTPS from LAN with iOS/Google TV apps (/t-issues-accessing-jellyfin-over-https-from-lan-with-ios-google-tv-apps)

Issues accessing Jellyfin over HTTPS from LAN with iOS/Google TV apps - PlugOut - 2025-09-26

Hi everyone,
I’m trying to set up Jellyfin with HTTPS in a clean way, but I’m running into some problems when accessing it from my internal network using the official apps.
Current setup
  • OS: Windows Server 2019
  • Domain: I have my own domain configured
  • External access: works via
    mydomain:port
    (UPnP rule automatically created by the router), but only over HTTP
  • Certificate: I already have a valid SSL certificate for my domain (issued with win-acme)
The problem
  • When I configure Jellyfin to use HTTPS with my domain certificate, I can connect from outside my network, but from inside the LAN the official apps (iOS and Google TV) fail to connect.
  • Access via browser works fine both internally and externally.
  • I also tried putting Jellyfin behind Nginx with a subpath
    /jellyfin
    :
  • Works fine in the browser
  • Same issue with the apps: they refuse to connect
Question
What’s the correct way to configure Jellyfin with HTTPS on Windows Server 2019 so that:
  • The official apps (iOS, Google TV, Windows) can connect both internally and externally
  • I can use my domain with a valid certificate, without relying on subpaths or non-standard ports
Thanks in advance for any help

RE: Issues accessing Jellyfin over HTTPS from LAN with iOS/Google TV apps - schnappi - 2025-09-29

1) Does your network have the same domain name as the domain name of your Jellyfin server? For example, most network have a domain, such a .lan, .local, ect.

2) Are you using a custom DNS server?

3) Add a single custom DNS server (just use 9.9.9.9) on one of your iOS devices that is not working, does this solve the problem?

4) Run a trace route from the iOS device that does not work. May need to download an app, but it can be done.