Manage Flash in Firefox for Enterprise

This article is no longer maintained, so its content might be out of date.

This article is intended for IT administrators who wish to set up Firefox on the computers within their organization.
You can use the policy manager in Firefox for Enterprise to manage Flash plugins for your users.

The FlashPlugin policy sets the default behavior for Flash as well as its behavior on specific websites:

  "policies": {
    "FlashPlugin": {
      "Allow": [""], /* Sites on the allow list do not override Flash being completely disabled */
      "Block": [""],
      "Default": [true|false], /* If this is set to true, Flash is always enabled. If it is set to false, Flash is never enabled */
      "Locked": [true|false]
There are many more policies for managing Firefox. For more information see

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