Windows SSO

Supported on: Firefox 91 or later

Registry

HKLM Software\Policies\Mozilla\Firefox

HKCU Software\Policies\Mozilla\Firefox

Value name: WindowsSSO

Enabled: WindowsSSO = 1

Disabled: WindowsSSO = 0

Description

If this policy is enabled, Firefox will use credentials stored in Windows to sign in to Microsoft, work, and school accounts. If this policy is disabled or not configured, credentials must be entered manually.