Troubleshooting AuthenticationAuthentication issues may include inability to log in, unexpected logouts, or errors while using other authentication methods.
Troubleshooting LicensingYou might see license-related errors if you cannot connect to the WHMCS license server or there is a misconfiguration in your system.
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.
Reset a User PasswordInitiate a password reset for a user who has lost their Client Area password. Users can also initiate password resets on the login form.
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 & WHM control panel.
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.
OpenID ConnectOpenID Connect is the online standard for Single Sign-On and identity provisioning. It uses JSON-based identity tokens (JWT) and OAuth 2.0.
OpenID Connect DevelopmentOpenID Connect uses JSON-based identity tokens (JWT) and OAuth 2.0 to allow third-party applications to access WHMCS with Single Sign-On.
Login Session LengthYou can adjust the login session length for admins and users. WHMCS will automatically end login sessions after the set period of inactivity.
Oops! Access Denied ErrorsTroubleshoot and resolve Oops! Access Denied - Forbidden errors while logging in to WHMCS.