MainWP Child doesn´t connect correctly

Hi,

at some websites I´ve got the problem, that mainwp child seems correctly connected, but mainwp dashboard says:

The MainWP Child plugin could not be detected or reached! Make sure the MainWP Child plugin is installed and activated on the child sites and that no security rules are blocking the requests. If you continue to experience this issue, check the MainWP community for further assistance.

I´ve tried:

  • disable mainwp child and reactivate
  • delete connection data

Nothing worked. It seemed like a kind of timeout, but I don´t know why. WordPress, Plugins and Themes are up to date. How could I solve this problem?

Here is the system report of this child site:


### Server-Konfiguration           Erforderlicher Wert                                    Wert                                         Status   ###

MAINWP CHILD                       
                                   MainWP Child Version                                   6.1                                          6.0.9       Warning     
WordPress                          
                                   WordPress Version                                      >=3.4                                        7.0         Pass        
                                   WordPress Memory Limit                                 >=64M                                        256M        Pass        
                                   MultiSite Disabled                                     =true                                        true        Pass        
                                   Dateisystem-Methode                                    = direct                                     direct      Pass        
PHP-EINSTELLUNGEN                  
                                   PHP Version                                            >=7.4                                        8.2.31      Pass        
                                   PHP Safe Mode deaktiviert                              AUS                                          
                                   PHP Max Execution Time                                 >=30 seconds                                 360         Pass        
                                   PHP Max Input Time                                     >=30 seconds                                 60          Pass        
                                   PHP Memory Limit                                       >=128M (256M+ best for big backups)          512M        Pass        
                                   PCRE Backtracking Limit                                >=10000                                      1000000     Pass        
                                   PHP Upload Max Filesize                                >=2M (2MB+ best for upload of big plugins)   32M         Pass        
                                   PHP Post Max Size                                      >=2M (2MB+ best for upload of big plugins)   32M         Pass        
                                   SSL Extension Enabled                                  =true                                        true        Pass        
                                   SSL Warnings                                           = empty                                      error:0480006C:PEM routines::no start lineWarning     
                                   cURL Extension Enabled                                 =true                                        true        Pass        
                                   cURL Timeout                                           >=300 seconds                                60          Warning     
                                   cURL Version                                           >=7.18.1                                     8.14.1      Pass        
                                   cURL SSL Version                                       >=OpenSSL/1.1.0                              OpenSSL/3.5.6Pass        
                                   OpenSSL Working Status                                 Yes                                          Yes         Pass        
MySQL-EINSTELLUNGEN                
                                   MySQL Version                                          >=5.0                                        12.3.2-MariaDB-deb13Pass        
BACKUP-ARCHIV-INFORMATION          
                                   ZipArchive enabled in PHP                              =true                                        true        Pass        
                                   Tar GZip supported                                     =true                                        true        Pass        
                                   Tar BZip2 supported                                    =true                                        true        Pass        
SERVER-INFORMATIONEN               
                                   WordPress Root-Verzeichnis                             /var/kunden/smartartist/lammira/htdocs/wordpress/
                                   Server Name                                            lammira-art.de                               
                                   Server Software                                        nginx/1.30.2                                 
                                   Betriebssystem                                         Linux                                        
                                   Architektur                                            64 bit                                       
                                   Server-IP-Adresse                                      202.61.225.112                               
                                   Server-Protokoll                                       HTTP/2.0                                     
                                   HTTP-Host                                              lammira-art.de                               
                                   HTTPS                                                  AN - on                                      
                                   Verbindung zum Server selbst                           Unerwarteter HTTP-Antwort-Body:              
                                   User Agent                                             Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36
                                   Server Port                                            443                                          
                                   Gateway-Schnittstelle                                  CGI/1.1                                      
                                   Arbeitsspeicherauslastung                              165.79 MB                                    
                                   Komplette URL                                          https://lammira-art.de/wp-admin/options-general.php?page=mainwp-reports-settings
                                   Antwort Zeit                                           1780389112                                   
                                   Inhalt akzeptieren                                     text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
                                   Inhaltszeichen akzeptieren                             n. a.                                        
                                   Aktuell ausgeführte Skript Pfadname                    /var/kunden/smartartist/lammira/htdocs/wordpress/wp-admin/options-general.php
                                   Aktuelle Seiten URI                                    /wp-admin/options-general.php?page=mainwp_child_tab&tab=settings
                                   Externe Adresse                                        91.114.81.36                                 
                                   Externer Host                                          N/A                                          
                                   Externer Port                                          51541                                        
PHP-INFORMATION                    
                                   PHP erlaubt URL fopen                                  AN                                           
                                   PHP unterstützt Exif                                   Ja ( V8.2.)                                  
                                   PHP unterstützt IPTC                                   Ja                                           
                                   PHP unterstützt XML                                    Ja                                           
                                   PHP Deaktivierte Funktionen                            dl, passthru, popen, proc_open, shell_exec, show_source, system,
                                   PHP Geladene Erweiterungen                             Core, FFI, PDO, PDO_Firebird, Phar, Reflection, SPL, SimpleXML, Zend OPcache, apcu, bcmath, bz2, calendar, cgi-fcgi, ctype, curl, date, dom, enchant, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, imagick, imap, intl, json, libxml, mbstring, mysqli, mysqlnd, openssl, pcre, pdo_mysql, pdo_sqlite, posix, pspell, random, readline, session, shmop, soap, sockets, sodium, sqlite3, standard, sysvmsg, sysvsem, sysvshm, tidy, tokenizer, xml, xmlreader, xmlwriter, xsl, zip, zlib
MySQL-INFORMATION                  
                                   MySQL-Modus                                            ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
                                   MySQL-Client-Verschlüsselung                           utf8mb4                                      
WordPress-PLUGINS                  
                                   Antispam Bee                                           2.11.12                                      Aktiv                   
                                   Branda                                                 3.4.29                                       Inaktiv                 
                                   Code Snippets                                          3.9.6                                        Aktiv                   
                                   Contact Form 7                                         6.1.6                                        Aktiv                   
                                   Dashboard Welcome for Elementor                        1.0.11                                       Aktiv                   
                                   Defender                                               5.11.0                                       Aktiv                   
                                   Elementor                                              4.1.1                                        Aktiv                   
                                   Elementor Pro                                          4.0.3                                        Aktiv                   
                                   Email Candy Pro - WooCommerce email templates designer 1.0.0                                        Aktiv                   
                                   Kadence Security Basic                                 10.0.2                                       Aktiv                   
                                   Koko Analytics                                         2.4.0                                        Aktiv                   
                                   MainWP Child                                           6.0.9                                        Aktiv                   
                                   MainWP Child reports                                   2.3.1                                        Aktiv                   
                                   One Stop Shop for WooCommerce                          1.8.4                                        Aktiv                   
                                   Shariff Wrapper                                        4.6.22                                       Aktiv                   
                                   User Role Editor                                       4.65                                         Aktiv                   
                                   WooCommerce                                            10.8.1                                       Aktiv                   
                                   WP Mail SMTP                                           4.8.0                                        Aktiv                   
                                   Yoast Duplicate Post                                   4.6                                          Aktiv                   
                                   Yoast SEO                                              27.7                                         Aktiv                   
                                   Zapier for WordPress                                   1.5.3                                        Aktiv                   

### Weiter durch                   Zeitplan                                               Haken                                     ###

2. Juni 2026 10:31                 Jede Minute                                            action_scheduler_run_queue                   
2. Juni 2026 10:32                 Every 60 seconds                                       koko_analytics_aggregate_stats               
2. Juni 2026 10:33                 Einmal stündlich                                       wc_admin_process_orders_milestone            
2. Juni 2026 10:40                 Einmal stündlich                                       wpdef_fetch_global_ip_list                   
2. Juni 2026 10:45                 Einmal stündlich                                       wp_privacy_delete_old_export_files           
2. Juni 2026 10:53                 Einmal stündlich                                       jetpack_clean_nonces                         
2. Juni 2026 11:00                 Every Half Hour                                        wdf_maybe_send_report                        
2. Juni 2026 11:04                 Einmal täglich                                         borlabsCookieTelemetry                       
2. Juni 2026 11:19                 Einmal stündlich                                       koko_analytics_test_custom_endpoint          
2. Juni 2026 11:22                 Einmal stündlich                                       itsec_cron                                   
2. Juni 2026 11:28                 Einmal stündlich                                       firewall_clean_up_logs                       
2. Juni 2026 11:30                 Einmal stündlich                                       wc_admin_unsnooze_admin_notes                
2. Juni 2026 11:31                 Zweimal täglich                                        woocommerce_gzd_trusted_shops_reviews        
2. Juni 2026 11:43                 Zweimal täglich                                        wpmudev_scheduled_jobs                       
2. Juni 2026 12:48                 Zweimal täglich                                        wp_update_user_counts                        
2. Juni 2026 12:55                 Einmal täglich                                         wpseo_detect_default_seo_data                
2. Juni 2026 13:34                 Zweimal täglich                                        wpdef_firewall_send_compact_logs_to_api      
2. Juni 2026 14:53                 Einmal täglich                                         jetpack_v2_heartbeat                         
2. Juni 2026 15:28                                                                        itsec_cron_test                              
2. Juni 2026 16:17                 Einmal täglich                                         antispam_bee_daily_cronjob                   
2. Juni 2026 18:28                 Einmal wöchentlich                                     wpdef_clear_scan_logs                        
2. Juni 2026 18:28                 Einmal täglich                                         wpdef_log_rotational_delete                  
2. Juni 2026 18:28                 Einmal wöchentlich                                     wpdef_firewall_clean_up_lockout              
2. Juni 2026 18:45                 Einmal täglich                                         recovery_mode_clean_expired_keys             
2. Juni 2026 18:45                 Zweimal täglich                                        wp_update_plugins                            
2. Juni 2026 18:45                 Zweimal täglich                                        wp_update_themes                             
2. Juni 2026 18:45                 Zweimal täglich                                        wp_version_check                             
2. Juni 2026 18:46                 Einmal täglich                                         wp_scheduled_delete                          
2. Juni 2026 18:46                 Einmal täglich                                         delete_expired_transients                    
2. Juni 2026 18:46                 Einmal täglich                                         wp_scheduled_auto_draft_delete               
2. Juni 2026 18:55                 Einmal täglich                                         koko_analytics_prune_data                    
2. Juni 2026 18:56                 Einmal täglich                                         elementor/tracker/send_event                 
2. Juni 2026 19:26                 Zweimal täglich                                        wp_mainwp_stream_auto_purge                  
2. Juni 2026 19:28                 Einmal täglich                                         wp_defender_clear_logs                       
2. Juni 2026 20:21                 Einmal täglich                                         eael_remove_unused_options_data              
2. Juni 2026 21:13                 Zweimal täglich                                        woocommerce_marketplace_cron_fetch_promotions
2. Juni 2026 21:15                 Einmal täglich                                         wpseo-reindex                                
2. Juni 2026 21:15                 Einmal täglich                                         wpseo_permalink_structure_check              
2. Juni 2026 21:17                 Zweimal täglich                                        woocommerce_marketplace_fetch_promotions     
2. Juni 2026 21:30                 Zweimal täglich                                        wpdef_firewall_whitelist_server_public_ip    
3. Juni 2026 8:26                  Einmal täglich                                         itsec_cron                                   
3. Juni 2026 8:51                  Einmal wöchentlich                                     wp_delete_temp_updater_backups               
3. Juni 2026 9:59                  Einmal täglich                                         itsec_cron                                   
3. Juni 2026 10:08                 Einmal täglich                                         itsec_cron                                   
3. Juni 2026 10:10                 Einmal täglich                                         itsec_cron                                   
3. Juni 2026 10:11                 Einmal täglich                                         itsec_cron                                   
3. Juni 2026 10:19                 Einmal täglich                                         itsec_cron                                   
3. Juni 2026 10:20                 Einmal täglich                                         wpdef_firewall_fetch_trusted_proxy_preset_ips
3. Juni 2026 10:24                 Einmal täglich                                         itsec_cron                                   
3. Juni 2026 10:30                 Einmal täglich                                         wc_admin_daily                               
5. Juni 2026 10:44                 Einmal wöchentlich                                     wpdef_smart_ip_detection_ping                
5. Juni 2026 18:45                 Einmal wöchentlich                                     wp_site_health_scheduled_check               
9. Juni 2026 8:21                  Einmal wöchentlich                                     wpdef_firewall_clean_up_unlockout            
9. Juni 2026 10:23                 Einmal wöchentlich                                     wpseo_expiring_store_cleanup                 
30. Juli 2026 12:28                60 days                                                wpdef_sec_key_gen                            

### Zeit                           Fehler                                              ###

MainWP is unable to find your error logs, please contact your host for server error logs.

What does a connection test say? I’ve just tested it from my dashboard and I get a “Connection Test OK”. If you get a timeout, your IP of your dashboard is probably blocked on the child site/server or your dashboard has a block to that server.

Thanks, where do I find the Connection Test Button?

Just try to add a new site, enter the correct url and the Test connection button will be there.


(in Dutch, but you’ll recognize it… :wink: )

Yes, connection is successfull.

Readding the site helped me, but there are always and again other sites which are facing the same issue. Is there any kind of log which says exactly what´s the error or how it is produced?

The log, or the response message from the child site, is not shown for security reasons. Basically, to avoid malicious code escapes.

However, we also have an internal tool that lets us see the response message from the Child site.

Next time you have a similar case, please open a help desk ticket, and we will take a look at that response from the child site.

Usually, it helps identify which security rule is blocking the connection from the Dashboard.