PopupBlocking

Allow certain websites to display popups and be redirected by third-party frames. Third-party redirect blocking is an extension of the pop-up blocker, so the same origins and settings apply to both.

Compatibility

Firefox	Firefox ESR	Firefox Enterprise
Available since 60	Available since 60	Available since 149

CCK2 Equivalent: permissions.popup
OMA-URI: PopupBlocking
Preferences Affected: dom.disable_open_during_load

Examples

policies.json

{
  "policies": {
    "PopupBlocking": {
      "Allow": [
        "https://example.org/",
        "https://example.edu/"
      ],
      "Default": true,
      "Locked": true
    }
  }
}

JSON schema

PopupBlocking JSON schema

{
  "type": "object",
  "properties": {
    "Allow": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri",
        "pattern": "^([Ff][Ii][Ll][Ee]://.*|[Hh][Tt][Tt][Pp][Ss]?://[^/]+/?)$"
      }
    },
    "Default": {
      "type": "boolean"
    },
    "Locked": {
      "type": "boolean"
    }
  }
}

Values

• Allow is a list of origins where popup-windows and third-party redirects are allowed.
• Default determines whether or not pop-up windows and third-party redirects are allowed by default.
• Locked prevents the user from changing pop-up windows and third-party redirects preferences.

Windows (GPO)

Software\Policies\Mozilla\Firefox\PopupBlocking\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\PopupBlocking\Allow\2 = "https://example.edu"
Software\Policies\Mozilla\Firefox\PopupBlocking\Default = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\PopupBlocking\Locked = 0x1 | 0x0

macOS

<dict>
  <key>PopupBlocking</key>
  <dict>
    <key>Allow</key>
    <array>
      <string>http://example.org</string>
      <string>http://example.edu</string>
    </array>
    <key>Default</key>
    <true/> | <false/>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

See also

• Pop-up blocker settings, exceptions and troubleshooting on support.mozilla.org