> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/faq/help-topics/connecting/end-user-authentication-and-sso.md).

# End-user authentication and SSO

Common questions about end-user authentication and SSO.

## Articles

{% content-ref url="/pages/6z6J23tdohTqgbGb3Lp0" %}
[Can SSO users connect a password-based provider?](/faq/help-topics/connecting/end-user-authentication-and-sso/credential-based-provider-no-sso-login.md)
{% endcontent-ref %}

{% content-ref url="/pages/etDEnydtHIlauLVqDftU" %}
[Can one user connect multiple providers via the widget?](/faq/help-topics/connecting/end-user-authentication-and-sso/multiple-providers-one-user.md)
{% endcontent-ref %}

{% content-ref url="/pages/VuY9jaFAm0UUGnWEdFl8" %}
[Why can't Apple/Google social-login users sign in?](/faq/help-topics/connecting/end-user-authentication-and-sso/social-login-no-password.md)
{% endcontent-ref %}

{% content-ref url="/pages/Ich4DnboXk1tGudn08Vr" %}
[Why do provider OAuth pages always show in English?](/faq/help-topics/connecting/end-user-authentication-and-sso/provider-page-language-not-controllable.md)
{% endcontent-ref %}

{% content-ref url="/pages/LSg55EvqC5BrQndSFPOX" %}
[How do I generate a per-user auth URL backend-only?](/faq/help-topics/connecting/end-user-authentication-and-sso/backend-only-auth-link-flow.md)
{% endcontent-ref %}