# SSO login

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**The application also supports multi-accounts, allowing you to add multiple accounts for users registered on the Hideez Enterprise Server within a single domain, as well as accounts from different Hideez servers in various domains. This is particularly convenient if you have multiple Hideez servers or multiple accounts on one server.**
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To use this option please first [enroll the application on HES](https://authenticator.hideez.com/user-guide/ios-guide/software-key-enrollment/sso-enrollment).

And then if your administrator enabled passwordless login, please, follow [this](https://authenticator.hideez.com/user-guide/ios-guide/login-with-hideez-authenticator/sso-login/sso-passwordless-login) guide. If you will use Hideez Authenticator as a second factor, please, follow [this](https://authenticator.hideez.com/user-guide/ios-guide/login-with-hideez-authenticator/sso-login/sso-login-as-a-second-factor) guide.