Authentication TutorialsHow-to guides for using two-factor authentication, backup codes, and single sign-on to authenticate.
Two-Factor AuthenticationTwo-Factor Authentication (2FA) enhances security by requiring both a password and a second step like a login code from a mobile device.
Duo® SecurityDuo® Security is a two-factor authentication (2FA) option that combines traditional account credentials with device-based verification.
LoginShare ModulesLoginShare modules can generate unique WHMCS API authentication credentials to authenticate users against a separate third-party system.
API CredentialsAPI authentication credentials allow your API-connected devices and systems to authenticate with WHMCS using API roles that you create.
Single Sign-OnSingle Sign-On allows users to log in to a cPanel & WHM or Plesk hosting account directly from a link in WHMCS without reauthenticating.
Application LinksApplication Links use WHMCS Single Sign-On to allow users to seamlessly access WHMCS from the cPanel or WP Squared control panels.
Sign-In IntegrationsSign-in integrations allow customers to connect with our supported platforms — Facebook®, Google®, or X™ (formerly Twitter™) — to quickly sign up or log in to WHMCS.