Android error connecting to server



Please help us by providing the following info.

Steps to reproduce
1. connect via Android Owncloud client
2. typ the connection: https://.../owncloud
3. Message: testing
4. Error message: Error connecting to server

Other steps undertaken:
- connecting via mobile browser: works OK
- connecting to test owncloud: works OK
- connecting not via WIFI, but via mobile subscription: works OK
- connection via windows desktop client: works OK
- connecting to webdav via browser: works OK

I've checked my own router settings: same behaviour even when no restrictions are on

Expected behaviour
A secure connection should be established. And next step is to login.

Actual behaviour
Error message: Error connecting to server

Mobile client configuration
Client OS (iOS, Android, ...): Android
Client version: 6.0.1

Server configuration
Operating system: Ubuntu 16.04
Web server: Apache2.4.1
Database: SQLLite
PHP version: 7.0
ownCloud version (see ownCloud admin page): 9.1
Updated from an older ownCloud or fresh install: fresh install
ownCloud log (data/owncloud.log): no entry in the log, nor in apache error.log or access.log

Special configurations (external storage, external authentication, reverse proxy, server-side-encryption): none


Thanks for taking the time to reply. But what do you mean?


Hi, @suzzper.

So, if I understood correctly, the Android app works fine when you access from the Internet, but not in your local network?

The rest of the tests you did (mobile browser, desktop client): were they via local WiFi ?

Is this something new, or has always failed for you?


Hi Davivel,

Thank you for your reply.
Your assumptions are correct. It's all working on my local network except the android client. In the meanwhile I've also tried a different app on my android. But that gave the same error. Other apps like Ownnote and Easy DAV for Owncloud are working fine.
It used to work. But I changed first from Apache to Nginx, unsuccessfully. And changed my Webserver back to Apache. The difference now is that I'm using a Letsencrypt certificate. Before I used a self signed certificate.
Of course I could try to reinstall everything again but I would like to find out the reason why it's not working.
Any tip or advice is welcome here :grinning:.
Kind regards,



@suzzper, might be related with the change of certificate, though I would expect a different behaviour from the app in that case.

Did you try to clean the app storage in your device and log-in then? In device Settings > Apps > ownCloud > Storage > Manage Space button > Clear Data button.


Hi Davivel,
Yes I've cleaned the storage and tried to login again -> still same error.
I've checked the certificate on my device, via Firefox and Chrome. Both inform me that the certificate is valid.

Kind regards,



What is the minor version of your OC server? Is it 9.1.0, 9.1.5, in the middle?


server version: 9.1.5


Hi @suzzper. Sorry for coming back so late.

Could you try ownCloud Android app 2.4.0, released last Monday?




I have exactly the same problem with ownCloud 10.0.6.
I tried with different Android clients :

  • ownCloud : error message "The connection took too much time".
  • Cirrus : error during download of a file "An error occured during the connection to the server"
  • Solid Explorer : it works but very very slowly.

If I disconnect the wifi and connect to the Internet with Mobile network, it works great.

Any idea?