> For the complete documentation index, see [llms.txt](https://help.marcopayroll.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.marcopayroll.com/marco-user-guide-x4/2025/marco-platform-structure/vendor-portal/configuring-microsoft-sso.md).

# Configuring Microsoft SSO

Marco OS supports Microsoft Single Sign-On (SSO), allowing users to access multiple Microsoft and third-party applications using a single Microsoft account.

Vendors can enable or disable SSO anytime via the SSO Settings toggle under Settings > SSO Settings. Once enabled, Vendor Admins can specify which email domains are whitelisted for user sign-in and sign-up on the platform.

Microsoft SSO enhances security by reducing password usage and enabling enterprise-grade protections like multi-factor authentication (MFA) and conditional access policies.


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