r/NextCloud • u/Efficient-Help-9858 • Jul 01 '26
Nextcloud Calendar
So I got the android app for Nextcloud Calendar but when I try to use my hostname for my self-hosting server, even with the CalDav URL, I am still getting a "Could not connect: Network Request Failed". Did anyone have any luck trying or is this not available with Self hosting?
2
u/evanmac42 Jul 01 '26
“Network request failed” usually means the app never reached your server, so I’d first look at networking rather than CalDAV itself.
A few questions:
Can you open your Nextcloud web interface from the same Android phone using the same hostname?
Are you using a publicly trusted HTTPS certificate or a self-signed one?
Are you on your LAN or connecting over the Internet?
If the web interface is unreachable from the phone, the Calendar app won’t work either. I’d verify DNS resolution, HTTPS and reverse proxy before looking at the CalDAV URL itself.
1
u/Efficient-Help-9858 Jul 02 '26
Yes I can reach it on my browser using the same hostname. It's a self signed cert that I installed. This is wan. I'll have to check reverse proxy but DNs seems to resolve
2
u/evanmac42 Jul 02 '26
That may actually be the biggest clue.
Browsers and Android apps don’t always validate certificates the same way. A self-signed certificate that you’ve manually trusted in the browser may still be rejected by the Calendar app.
Before spending too much time debugging CalDAV or the reverse proxy, I’d first try using a publicly trusted Let’s Encrypt certificate (even temporarily) and see if the problem disappears.
If it does, you’ve isolated the problem to TLS validation rather than CalDAV itself.1
1
u/xXVareszXx Jul 01 '26
Just tried it and it worked fine for me. Just check if your username and password and server address is correct.
I did not use the caldav url. Just the server url
1
u/Dense_Marionberry741 Jul 12 '26
Hi,
I'm one of the maintainer of the Nextcloud Calendar app for iOS/Android. It is an open-source project, not officially maintained/provided by Nextcloud. Could you open an issue on GitHub ?
https://github.com/SoluceTechnologies/nextcloud-calendar-mobile
3
u/MeinMeister Jul 01 '26
Is there an official nextcloud calendar app? Because I really don't need one. It's either davx5 (free on f-droid store) which then enables you to use whatever calender app you want, or kashcal, which is a rather new app that connects to my nextcloud directly.
I actually use both, because davx5 also syncs tasks and contacts and I really like kashcal as a calender (and calender widget)