LegacySameSiteCookieBehaviorEnabled

Enable default legacy SameSite cookie behavior setting.

If this policy is set to true, it reverts all cookies to legacy SameSite behavior which means that cookies that don't explicitly specify a SameSite attribute are treated as if they were SameSite=None.

Compatibility: Firefox 96
CCK2 Equivalent: N/A
Preferences Affected: network.cookie.sameSite.laxByDefault

Windows (GPO)

Software\Policies\Mozilla\Firefox\LegacySameSiteCookieBehaviorEnabled = = 0x1 | 0x0

Windows (Intune)

OMA-URI:

./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/LegacySameSiteCookieBehaviorEnabled

Value (string):

<enabled/> or <disabled/>

macOS

<dict>
  <key>LegacySameSiteCookieBehaviorEnabled</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "LegacySameSiteCookieBehaviorEnabled": true | false
}