DefaultSerialGuardSetting

Control use of the Web Serial API.

Note

If any enterprise policies are set, the WebSerial API is blocked by default. To allow usage of the API, set this policy to 3.

Examples

{
  "policies": {
    "DefaultSerialGuardSetting": 3
  }
}

Values

• 2 means use of the WebSerial API is blocked.
• 3 means use of the WebSerial API is allowed.

Windows (GPO)

Software\Policies\Mozilla\Firefox\DefaultSerialGuardSetting = 0x2 | 0x3

macOS

<dict>
  <key>DefaultSerialGuardSetting</key>
  <integer>2 | 3</integer>
</dict>

Compatibility

Firefox	Firefox ESR	Firefox Enterprise
Available since 151	Available since 153	Available since 151

CCK2 Equivalent: N/A
OMA-URI: DefaultSerialGuardSetting
Preferences Affected: dom.webserial.enabled