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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
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Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can
Nextcloud version (eg, 29.0.5): 29.0.2
Operating system and version (eg, Ubuntu 24.04):24.04 LTS
Apache or nginx version (eg, Apache 2.4.25): not sure
PHP version (eg, 8.3): not sure
The issue you are facing:
Is this the first time you’ve seen this error? (Y/N): N
Steps to replicate it:
Login to nextcloud GUI
The login will never expired
The output of your Nextcloud log in Admin > Logging:
not sure
The output of your config.php file in `/path/to/nextcloud` (make sure you remove any identifiable information!):
not sure
The output of your Apache/nginx/system log in `/var/log/____`:
not sure
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
Normally you can not find it in your Home Directory. Normally it is installed e.g. in /var/www/html/nextcloud for user www-data. You can access it with user root or sudo.
Try to understand how commands are structured. sudo is there to execute something in this case as root and you forgot the command itself. You do not need sudo for only read.
cd /var/www/html/nextcloud/config
cat config.php
(change dir (cd) to the config dir and list the file (cat) with normal user (not root, not webserver user www-data)
You should greatly improve your Linux knowledge, as you will be able to find a solution to future problems and avoid losing data.
You should also be able to switch to it in your graphical file explorer. Practise more with the command line. You will need it one day.
But just as you can buy licences for Microsoft 365 or Microsoft Teams, you can also get a Managed Nextcloud on the Internet. This is available from 5 euros per month for any number of users. Nextcloud Talk for video conferencing or Nextcloud Office for Office may cost extra.
Because I never do that. It’s not because of Microsoft Teams either. There are plenty of free of charge alternatives such as Jitsi, BigBlueButton, eduMEET, OpenTalk and Nextcloud Talk.
Which graphical file manager (see your screenshot above) are you using? Maybe you can use it with administrator rights. Then you can enter “/” at the top instead of “/home”, for example, and search for the correct folder and the config.php file there.
All in all, however, this is difficult without Linux knowledge. At some point, your Nextcloud will break down completely and then you won’t be able to repair it. Perhaps a Managed Nextcloud on the Internet would be better. I mean, you don’t administer Microsoft Teams, i.e. the Microsoft servers on the Internet, do you? And Microsoft Teams is only about a few conversations and not about important data.
Your questions are a bit baffling. Not because there is anything wrong with learning, but to install Nextcloud Server you’d generally have a fair idea of where you installed it on your system. So it’s challenging for us to answer these questions since we didn’t perform the installation.
