Support intro
Sorry to hear you’re facing problems 
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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
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, 20.0.5): 27.1.2.1
Operating system and version (eg, Ubuntu 20.04): Ubuntu Server 22.04.2 LTS
Apache or nginx version (eg, Apache 2.4.25): ?
PHP version (eg, 7.4): ?
The issue you are facing:
The official Nextcloud clients on Windows, Linux and Android can no longer connect to the instance and get a connection timeout error.
Connecting to the web interface works from multiple browsers and multiple devices, all using different IP addresses.
Connecting to WebDAV with a WebDAV client sill works as well.
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- Enter url of Nextcloud instance in Windows, Linux or Android client and connect
- Wait for connection timeout
The output of your Nextcloud log in Admin > Logging:
OC\Authentication\Exceptions\InvalidTokenException: Token is too short for a generated token, should be the password during basic auth
OC\Authentication\Exceptions\InvalidTokenException: Token does not exist: token does not exist
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'memcache.local' => '\\OC\\Memcache\\APCu',
'datadirectory' => '/data',
'instanceid' => 'REDACTED',
'passwordsalt' => 'REDACTED',
'secret' => 'REDACTED',
'trusted_domains' =>
array (
0 => 'REDACTED',
),
'dbtype' => 'mysql',
'version' => '27.1.2.1',
'overwrite.cli.url' => 'https://REDACTED',
'overwriteprotocol' => 'https',
'dbname' => 'REDACTED',
'dbhost' => 'REDACTED',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'REDACTED',
'dbpassword' => 'REDACTED',
'installed' => true,
'maintenance' => false,
'enable_previews' => true,
'enabledPreviewProviders' =>
array (
0 => 'OC\\Preview\\TXT',
1 => 'OC\\Preview\\MarkDown',
2 => 'OC\\Preview\\OpenDocument',
3 => 'OC\\Preview\\PDF',
4 => 'OC\\Preview\\MSOffice2003',
5 => 'OC\\Preview\\MSOfficeDoc',
6 => 'OC\\Preview\\PDF',
7 => 'OC\\Preview\\Image',
8 => 'OC\\Preview\\Photoshop',
9 => 'OC\\Preview\\TIFF',
10 => 'OC\\Preview\\SVG',
11 => 'OC\\Preview\\Font',
12 => 'OC\\Preview\\MP3',
13 => 'OC\\Preview\\Movie',
14 => 'OC\\Preview\\MKV',
15 => 'OC\\Preview\\MP4',
16 => 'OC\\Preview\\AVI',
),
'preview_max_x' => '2048',
'preview_max_y' => '2048',
'jpeg_quality' => '60',
'loglevel' => 0,
'theme' => '',
'defaultapp' => 'files',
'mail_smtpmode' => 'smtp',
'mail_smtpsecure' => 'ssl',
'mail_sendmailmode' => 'smtp',
'mail_from_address' => 'REDACTED',
'mail_domain' => 'REDACTED',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_smtphost' => 'REDACTED',
'mail_smtpport' => 'REDACTED',
'mail_smtpname' => 'REDACTED',
'mail_smtppassword' => 'REDACTED',
'filelocking.enabled' => 'true',
'memcache.locking' => '\\OC\\Memcache\\APCu',
'trusted_proxies' => ['REDACTED'],
'overwrite.cli.url' => 'REDACTED',
'overwritehost' => 'REDACTED',
'overwriteprotocol' => 'https',
);
The output of your Apache/nginx/system log in /var/log/____:
<redacted IP> - <redacted user> [26/Oct/2023:11:58:57 +0200] "GET /index.php/204 HTTP/1.1" 204 0 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:11:58:57 +0200] "GET /index.php/204 HTTP/1.1" 204 0 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:11:58:57 +0200] "GET /status.php HTTP/1.1" 200 151 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:11:59:59 +0200] "GET /index.php/204 HTTP/1.1" 204 0 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:11:59:59 +0200] "GET /index.php/204 HTTP/1.1" 204 0 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:11:59:59 +0200] "GET /status.php HTTP/1.1" 200 151 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:12:01:01 +0200] "GET /index.php/204 HTTP/1.1" 204 0 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:12:01:01 +0200] "GET /index.php/204 HTTP/1.1" 204 0 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
<redacted IP> - <redacted user> [26/Oct/2023:12:01:01 +0200] "GET /status.php HTTP/1.1" 200 151 "-" "Mozilla/5.0 (Windows) mirall/3.10.1stable-Win64 (build 20231025) (Nextcloud, windows-10.0.22621 ClientArchitecture: x86_64 OsArchitecture: x86_64)"
Screenshots:
