DefaultSerialGuardSetting

Control use of the Web Serial API.

Compatibility: Firefox 151
CCK2 Equivalent: N/A
Preferences Affected: dom.webserial.enabled

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

Windows (Intune)

OMA-URI:

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

Value (string):

<enabled/>
<data id="DefaultSerialGuardSetting" value="2 | 3"/>

macOS

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

policies.json

{
  "policies": {
    "DefaultSerialGuardSetting": 2 | 3
  }
}