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Mozilla.Policies.Firefox• Both

Revert to legacy SameSite behavior

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If this policy is enabled, Firefox will revert to the legacy behavior of SameSite. This means that cookies that don't explicitly specify a SameSite attribute are treated as if they were SameSite=None. If this policy is disabled or not configured, Firefox will enforce SameSite=lax.

Policy Details

Policy Name
LegacySameSiteCookieBehaviorEnabled
Registry Key
Software\Policies\Mozilla\Firefox
Value Name
LegacySameSiteCookieBehaviorEnabled
Supported On
Firefox 96 or later
Policy State Values
Enabled: 1
Disabled: 0
Available Languages
en-usde-defr-frru-ru