Support intro
Sorry to hear you’re facing problems. 
The community help forum (help.nextcloud.com) is for home and non-enterprise users. Support is provided by other community members on a best effort / “as available” basis. All of those responding are volunteering their time to help you.
If you’re using Nextcloud in a business/critical setting, paid and SLA-based support services can be accessed via portal.nextcloud.com where Nextcloud engineers can help ensure your business keeps running smoothly.
Getting help
In order to help you as efficiently (and quickly!) as possible, please fill in as much of the below requested information as you can.
Before clicking submit: Please check if your query is already addressed via the following resources:
- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
(Utilizing these existing resources is typically faster. It also helps reduce the load on our generous volunteers while elevating the signal to noise ratio of the forums otherwise arising from the same queries being posted repeatedly).
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. 
The Basics
- Nextcloud Server version (e.g., 29.x.x):
25.0.4
- Operating system and version (e.g., Ubuntu 24.04):
Debian 11
- Web server and version (e.g, Apache 2.4.25):
- Apache/2.4.54 (Debian)
- Reverse proxy and version _(e.g. nginx 1.27.2)
n/a
- PHP version (e.g, 8.3):
- PHP 8.1.16
- Is this the first time you’ve seen this error? (Yes / No):
Yes
- When did this problem seem to first start?
n/a
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
Docker
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
-
No
Summary of the issue you are facing:
I currently have an v25.0.4 instance which I want to upgrade to the latest version (v32.x.x). The installation is based on Docker containers with the Nextcloud app image being retrieved from “image: nextcloud:latest”.
I’d like to upgrade the app to the latest version (v32.x.x). I know I will have to go through the entire list v25 –> v26 –> v27… –> v32, but how will I practically upgrade one version at a time? Just changing the name of the image (nextcloud:26 maybe) in the compose file, stopping / restarting the container? Should I also upgrade the database (currently mariadb:10.5)?
Can you please indicate the syntax for the name too?
Thanks in advance for any help!
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
<?php
$CONFIG = array (
'default_phone_region' => 'BE',
'htaccess.RewriteBase' => '/',
'memcache.local' => '\\OC\\Memcache\\APCu',
'apps_paths' =>
array (
0 =>
array (
'path' => '/var/www/html/apps',
'url' => '/apps',
'writable' => false,
),
1 =>
array (
'path' => '/var/www/html/custom_apps',
'url' => '/custom_apps',
'writable' => true,
),
),
'instanceid' => 'instanceID',
'passwordsalt' => 'SALT',
'secret' => 'SECRET',
'trusted_domains' =>
array (
0 => 'domain.com',
),
'datadirectory' => '/var/www/html/data',
'dbtype' => 'mysql',
'version' => '25.0.4.1',
'overwrite.cli.url' => 'https://domain.com',
'overwriteprotocol' => 'https',
'dbname' => 'nextcloud',
'dbhost' => 'mariadb',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'nc-user',
'dbpassword' => 'DBPASSWORD',
'installed' => true,
'mail_from_address' => 'nextcloud',
'mail_smtpmode' => 'smtp',
'mail_sendmailmode' => 'smtp',
'mail_domain' => 'domain.com',
'mail_smtpsecure' => 'ssl',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_smtphost' => 'smtp.host.org',
'mail_smtpport' => '465',
'mail_smtpname' => 'postmaster@domain.com',
'mail_smtppassword' => 'SMTPPASSWORD',
'allow_local_remote_servers' => true,
'app_install_overwrite' =>
array (
0 => 'groupfolders',
),
'maintenance' => false,
'log_rotate_size' => 5242880,
'loglevel' => 0,
'theme' => '',
);
Apps
The output of occ app:list (if possible).
Talk + OnlyOffice
