Webdav not working remotely

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The Basics

  • Nextcloud Server version (e.g., 29.x.x):
    • 30.0.6.2
  • Operating system and version (e.g., Ubuntu 24.04):
    • Debian 12
  • Web server and version (e.g, Apache 2.4.25):
    • MariaDB??
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • none
  • PHP version (e.g, 8.3):
    • 8.3.17
  • Is this the first time you’ve seen this error? (Yes / No):
    • Yes
  • When did this problem seem to first start?
    • unsure - just noticed it sept. 24, 2025
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • NCP - Version 1.55.4 currently
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • no - fail2ban is used though

Summary of the issue you are facing:

I use Davx5 on my android device. It is failing to connect to my server to sync, when on cell service or wifi away from home/server. When I get on my wifi at home, it syncs fine. Nextcloud app on my phone also fails to sync if not on home wifi. I’ve been using this system since 2021 (when last installed).

I use no-ip ddns, it is updating properly.

I noticed on my system info page of the ncp web panel, that for Port 80 and Port 443, it shows: [N/A]. My router still has the ports open. I tried rebooting the server and router with no success.

If i rerun the no-ip setup on the NCP web panel and click apply, it returns:

[ no-ip ] (Wed Sep 24 22:39:58 EDT 2025)

Auto configuration for Linux client of no-ip.com.

Can’t connect to dynupdate.no-ip.com (Connection refused)
Network must be operational to create configfile. Ending!

Steps to replicate it (hint: details matter!):

  1. on internet away from home, attempt to sync davx5 and it fails. Nextcloud app also fails

  2. reboot, same issue

Log entries

Nextcloud

Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.

[webdav] Error: read error on connection to /var/run/redis/redis.sock:0
	PROPFIND /remote.php/dav/files/ncp/
	from 192.168.2.1 by ncp at Sep 24, 2025, 10:06:27 PM

[settings] Warning: Could not load media file for app discover section
	GET /index.php/settings/api/apps/media?fileName=https%3A%2F%2Fgithub.com%2Fnextcloud%2Ffirstrunwizard%2Fraw%2Fmaster%2Fimg%2FNextcloud.mp4
	from 192.168.2.1 by ncp at Sep 24, 2025, 10:52:03 PM

[settings] Warning: Could not load media file for app discover section
	GET /index.php/settings/api/apps/media?fileName=https%3A%2F%2Fgithub.com%2Fnextcloud%2Ffirstrunwizard%2Fraw%2Fmaster%2Fimg%2FNextcloud.webm
	from 192.168.2.1 by ncp at Sep 24, 2025, 10:52:03 PM

[no app in context] Warning: Capabilities of OCA\Files\DirectEditingCapabilities took 0.7 seconds to generate.
	GET /ocs/v1.php/cloud/capabilities?format=json
	from 192.168.2.1 by ncp at Sep 24, 2025, 10:21:36 PM

[no app in context] Fatal: Capabilities of OCA\CloudFederationAPI\Capabilities took 4.98 seconds to generate.
	GET /JNAP/
	from 2600:6c47:a200:e3:6238:e0ff:febc:5678 by -- at Sep 24, 2025, 10:21:32 PM

[no app in context] Error: Failed to connect to the app store
	from ? by -- at Sep 24, 2025, 7:36:51 AM

2025-09-24_23-16
2025-09-24_23-16480Ă—837 44 KB

2

So I’ve identified that this is a router or isp issue. My emby server is also inaccessible remotely and that’s just using the ip and port in a web browser.

This can be closed if necessary but I’d still appreciate any tips to resolve this. I’m going to factory reset my router. But first will connect my server machine straight to the modem to see if the issue persists. This will narrow it down to something on my server blocking ports or my isp.

3

It’s definitely something on my server machine or my isp. Directly plugging into my modem and then using my phone cell service to try to access nextcloud or emby fails.

4

It was my router. Reset it to factory defaults, reassigned my dhcp addresses and reserved them, opened ports and voila. I have remote access again.

5

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