wpsnoop Fatal error: Cannot redeclare wp_new_user_notification()

If you are dealing with a WordPress issue where a PHP Function wp_new_user_notification() was already declared it is most likely due to a plugin/theme conflict.

wpsnoop scanned and analyzed over 100,000 WordPress plugins and themes to find and locate potential conflicts including functions that share the same name.

This page has information on the 64 places where that function is declared and used in WordPress plugins and themes.

Note: Our database currently only taps into the free themes and plugins available in the publicly available WordPress plugins and themes, if your site uses paid plugins, themes or custom code there may be additional conflicts.


Our database has uncovered 64 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/user-registration-aide/e-mails.php:21)

This file is part of the WordPress plugin User Registration Aide and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/simple-user-adding/classes/plugin.php:327)

This file is part of the WordPress plugin Simple User Adding and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/custom-user-emails/useremails.php:125)

This file is part of the WordPress plugin Custom User Emails and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/custom-user-registration/custom-user-registration.php:54)

This file is part of the WordPress plugin Custom User Registration and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/sendwithus/inc/single_site_overrides.php:94)

This file is part of the WordPress plugin sendwithus and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/auto-login-new-users/inc/user-registered.php:28)

This file is part of the WordPress plugin Auto-Login New Users and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-gdpr-data-protection/inc/core.php:161)

This file is part of the WordPress plugin WooCommerce GDPR (DSGVO) Data Protection and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/botsmasher/bs-registrations.php:25)

This file is part of the WordPress plugin BotSmasher and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-notifications-manager/wp-notifications-manager.php:86)

This file is part of the WordPress plugin WP Notifications Manager and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/multi-admin-emails/multi-admin-emails.php:29)

This file is part of the WordPress plugin Multiple Admin Emails and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/user-spam-remover/user-spam-remover.php:911)

This file is part of the WordPress plugin User Spam Remover and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wpmuldap/lib/wpmu_ldap_admin.functions.php:738)

This file is part of the WordPress plugin WPMU Ldap Authentication and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/disable-new-user-email-notifications/disable-new-user-email.php:11)

This file is part of the WordPress plugin Disable new user email notifications and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/disable-new-user-notification/disable-new-user-notification.php:20)

This file is part of the WordPress plugin Disable New User Notification and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wordpress-password-register/wp-user-registration.php:453)

This file is part of the WordPress plugin WP User Registration and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/disable-new-user-notifications/cwwp-disable-new-user-emails.php:38)

This file is part of the WordPress plugin Disable New User Notifications and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-photocontest/wp-photocontest.php:508)

This file is part of the WordPress plugin WP-PhotoContest and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/eliminate-notify-email/eliminate-notify-email.php:30)

This file is part of the WordPress plugin Eliminate Notify Email and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/absolute-privacy/functions.php:1013)

This file is part of the WordPress plugin Absolute Privacy and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-mailing-group/mailing-group-module.php:971)

This file is part of the WordPress plugin WP Mailing Group and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/private-email-notifications/private-notifications.php:12)

This file is part of the WordPress plugin Private Email Notifications and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-spamshield/wp-spamshield.php:6698)

This file is part of the WordPress plugin WP-SpamShield and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/html-new-user-notification-email/ab-index.php:45)

This file is part of the WordPress plugin Html New User Notification and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/dm-confirm-email/inc/pluggable.php:4)

This file is part of the WordPress plugin DM Confirm Email and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-user-avatar/src/Functions/GlobalFunctions.php:863)

This file is part of the WordPress plugin ProfilePress and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/custom-registration/cr.php:30)

This file is part of the WordPress plugin Custom Registration and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/responsive-email-using-divi-builder/src/class-oa-responsive-email-overrides.php:36)

This file is part of the WordPress plugin Responsive Email using Divi Builder and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wh-tweaks/wh-tweaks.php:219)

This file is part of the WordPress plugin WH Tweaks and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/user-activation-email/user-activation-email.php:381)

This file is part of the WordPress plugin User Activation Email and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/felix-user-memberships-content-restriction/inc/process/helpers.php:4)

This file is part of the WordPress plugin Felix User Membership Site and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/trinitycore-server-management-suite/trinitymanagementsuite.php:117)

This file is part of the WordPress plugin Trinity Management Suite and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-user-registration/wp-user-registration.php:453)

This file is part of the WordPress plugin WP User Registration and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/gift-on-registration/gift-on-registration.php:124)

This file is part of the WordPress plugin Gift on User Registration and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-custom-emails/includes/core/overrides.php:25)

This file is part of the WordPress plugin WP Custom Emails and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-xintaoke/wp-xintaoke.php:207)

This file is part of the WordPress plugin 新淘客WordPress插件 and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/mgrt/mgrt.php:47)

This file is part of the WordPress plugin Mgrt for Wordpress and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/manage-notification-emails/modules/pluggable/pluggable-functions-1.5.php:85)

This file is part of the WordPress plugin Manage Notification E-mails and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/expire-password/pluggable.php:1250)

This file is part of the WordPress plugin PassExpire and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/browserid/lib/browserid-registration.php:129)

This file is part of the WordPress plugin Mozilla Persona and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-http-digest/wp-http-digest.php:29)

This file is part of the WordPress plugin wp-http-digest and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/custom-new-user-email-template/custom-new-user-template.php:63)

This file is part of the WordPress plugin Custom New User Email Template and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/custom-new-user-notification/custom-new-user-notification.php:101)

This file is part of the WordPress plugin Custom New User Notification and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/mailingreport/mgrt.php:47)

This file is part of the WordPress plugin MailingReport for Wordpress and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/placester/placester-leads/placester-membership/membership-helper.php:57)

This file is part of the WordPress plugin Real Estate Website Builder and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-identity/wp-identity.php:570)

This file is part of the WordPress plugin Identity Plugin and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/email-form-under-post/postemail-wordpress.php:67)

This file is part of the WordPress plugin Mandrill For WordPress - Email form under Post and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/new-user-email-set-up/newuseremailsetup.php:452)

This file is part of the WordPress plugin New User Email Setup and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/pesapal-membership/pesapal_membership/pesapal_membership-init.php:532)

This file is part of the WordPress plugin PesaPal Membership and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/accesspress-social-login-lite/accesspress-social-login-lite.php:57)

This file is part of the WordPress plugin Social Login WordPress Plugin - AccessPress Social Login Lite and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/disable-wpmail-notifications/disable-email-notifications.php:17)

This file is part of the WordPress plugin Disable Email Notifications and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/leads-edit-core-email-templates/classes/core.php:281)

This file is part of the WordPress plugin Inbound Now - Edit Core WordPress Email Templates and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/commons-booking/admin/cb-users/class-cb-users.php:444)

This file is part of the WordPress plugin CB (legacy) and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/cimy-user-extra-fields/cimy_uef_email_handler.php:10)

This file is part of the WordPress plugin Cimy User Extra Fields and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/digest/template-tags/pluggable.php:34)

This file is part of the WordPress plugin Digest Notifications and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/register-plus/register-plus.php:1734)

This file is part of the WordPress plugin Register Plus and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/disable-email-notifications-for-new-user-registration/disable.php:35)

This file is part of the WordPress plugin Disable Email Notifications in Wordpress 4.x for new user registration and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wasp-anti-spam/inc/register.php:173)

This file is part of the WordPress plugin WASP - Anti Spam and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/wp-login-flow/pluggables/wp-new-user-notification.php:35)

This file is part of the WordPress plugin WP Login Flow and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/enhanced-emails/pluggable.php:579)

This file is part of the WordPress plugin Enhanced Emails and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/welcome-email-editor/wp-new-user-notification.php:33)

This file is part of the WordPress plugin Welcome Email Editor and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/qqconnect/qqconnect.php:217)

This file is part of the WordPress plugin QQ登录 and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/lucidlms/includes/lucid-wp-emails.php:203)

This file is part of the WordPress plugin LucidLMS and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/regnomail/regnomail.php:293)

This file is part of the WordPress plugin Regnomail and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_new_user_notification() (previously declared in wp-content/plugins/smart-wp-login/swpl_overrides_wp.php:23)

This file is part of the WordPress plugin Smart WP Login and could be interacting with another theme or plugin and causing a fatal error.

The error occurs because two (or more) plugins that you are using are both trying to declare a function with the same name.