wpsnoop Fatal error: Cannot redeclare wp_authenticate()

If you are dealing with a WordPress issue where a PHP Function wp_authenticate() 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 19 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 19 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_authenticate() (previously declared in wp-content/plugins/user-registration-aide/ura-functions.php:172)

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_authenticate() (previously declared in wp-content/plugins/tt-sidebar-login-widget/tt-sidebar-login.php:329)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/wp-gdpr-data-protection/inc/core.php:10)

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_authenticate() (previously declared in wp-content/plugins/mxc-ldap/mxc-ldap.php:29)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/login-lockdown/loginlockdown.php:472)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/strong-authentication/strong-authentication.php:212)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/linotp/linotp-auth.php:134)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/ldap-authentication/ldap-authentication.php:204)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/login-token/index.php:17)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/asmember/public/user-login.php:123)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/expire-password/pluggable.php:527)

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_authenticate() (previously declared in wp-content/plugins/wp-smart-security/inc/auth.php:18)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/secure-login/includes/authenticate.php:4)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/armember-membership/core/classes/class.arm_restriction.php:2124)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/wp-passport/wp-session.php:42)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/securio-wplogin/securio-wplogin.php:1022)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/honnypotter/honnypotter.php:55)

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

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/3rd-party-authentication/3rd-party-authentication.php:487)

This file is part of the WordPress plugin 3rd Party Authentication and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare wp_authenticate() (previously declared in wp-content/plugins/va-simple-enhanced-security/incs/class-module-email-login.php:141)

This file is part of the WordPress plugin VA Simple Enhanced Security 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.