Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
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
here
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, 12.0.2): 16.0.5.1
Operating system and version (eg, Ubuntu 17.04): Ubuntu 18.04 server
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.29
PHP version (eg, 7.1): 7.2.24
The issue you are facing:
After migration to a new server (old was ubuntu 14.04) I cannot login anymore, neither web nor any client. database is set up again and seems to be fine. I’m runnig plesk. Wherever I try it seems I do have the right permissions…
Is this the first time you’ve seen this error? (Y/N):
yes
Steps to replicate it:
- try to login
The output of your Nextcloud log in Admin > Logging:
{"reqId":"XdmhlmplNFaEtaUqyYz3lgAAAAU","level":2,"time":"2019-11-23T21:16:31+00:00","remoteAddr":"92.218.116.68","user":"--","app":"core","method":"POST","url":"\/index.php\/login?user=domhans","message":"Login failed: 'domhans' (Remote IP: '92.218.116.68')","userAgent":"Mozilla\/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"16.0.5.1"}
{"reqId":"XdmhlmplNFaEtaUqyYz3lgAAAAU","level":1,"time":"2019-11-23T21:16:56+00:00","remoteAddr":"92.218.116.68","user":"--","app":"core","method":"POST","url":"\/index.php\/login?user=domhans","message":"Bruteforce attempt from \"92.218.116.68\" detected for action \"login\".","userAgent":"Mozilla\/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"16.0.5.1"}
{"reqId":"Xdmi4bQBo0OOk@A6FRfdkQAAAAE","level":2,"time":"2019-11-23T21:22:02+00:00","remoteAddr":"92.218.116.68","user":"--","app":"core","method":"POST","url":"\/index.php\/login?user=domhans","message":"Login failed: 'domhans' (Remote IP: '92.218.116.68')","userAgent":"Mozilla\/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"16.0.5.1"}
{"reqId":"Xdmi4bQBo0OOk@A6FRfdkQAAAAE","level":1,"time":"2019-11-23T21:22:27+00:00","remoteAddr":"92.218.116.68","user":"--","app":"core","method":"POST","url":"\/index.php\/login?user=domhans","message":"Bruteforce attempt from \"92.218.116.68\" detected for action \"login\".","userAgent":"Mozilla\/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"16.0.5.1"}
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => '...',
'passwordsalt' => '...',
'secret' => '...',
'trusted_domains' =>
array (
0 => '...',
),
'datadirectory' => '/var/www/vhosts/domhans.de/OwnCloudData',
'overwrite.cli.url' => '...',
'dbtype' => 'mysql',
'version' => '16.0.5.1',
'dbname' => 'owncloud',
'dbhost' => 'localhost',
'dbtableprefix' => 'oc_',
'dbuser' => 'domhans',
'dbpassword' => '...',
'installed' => true,
'theme' => '',
'maintenance' => false,
'forcessl' => true,
'forceSSLforSubdomains' => true,
'loglevel' => 0,
'trashbin_retention_obligation' => 'auto',
'appstore.experimental.enabled' => false,
'debug' => true,
'updater.release.channel' => 'stable',
'app_install_overwrite' =>
array (
0 => 'calendar',
),
);
The output of your Apache/nginx/system log in /var/log/____:
::1 - - [23/Nov/2019:22:21:19 +0100] "OPTIONS * HTTP/1.0" 200 110 "-" "Apache/2.4.29 (Ubuntu) OpenSSL/1.1.1 mod_fcgid/2.3.9 (internal dummy connection)"
::1 - - [23/Nov/2019:22:21:20 +0100] "OPTIONS * HTTP/1.0" 200 110 "-" "Apache/2.4.29 (Ubuntu) OpenSSL/1.1.1 mod_fcgid/2.3.9 (internal dummy connection)"
