LocalFileLinks

Enable linking to local files by origin.

By default, a page served over http:// or https:// cannot link to a file:/// URL. Firefox blocks the navigation and reports a security error in the browser console.

This policy lists the origins that are allowed to link to the local file system. Intranet applications may need this, for example, to link to files on a shared drive.

Compatibility

Firefox	Firefox ESR	Firefox Enterprise
Available since 68	Available since 68	Available since 149

CCK2 Equivalent: N/A
OMA-URI: LocalFileLinks
Preferences Affected: capability.policy.policynames, capability.policy.localfilelinks_*

Examples

policies.json

{
  "policies": {
    "LocalFileLinks": [
      "http://example.org/",
      "http://example.edu/"
    ]
  }
}

JSON schema

LocalFileLinks JSON schema

{
  "type": "array",
  "items": {
    "type": "string"
  }
}

Windows (GPO)

Software\Policies\Mozilla\Firefox\LocalFileLinks\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\LocalFileLinks\2 = "https://example.edu"

macOS

<dict>
  <key>LocalFileLinks</key>
  <array>
    <string>http://example.org</string>
    <string>http://example.edu</string>
  </array>
</dict>

See also

• File URI scheme on wikipedia.org