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navs1699's avatar
navs1699
Copper Contributor
Nov 17, 2025

Firefox browser extension control on Macos

Hi

I am trying to use Intune to manage Firefox extensions on macOS devices which are enrolled into Intune, but am struggling to get the policy to apply and wonder what I am doing wrong.

Objective (for testing anyway):

Allow the Keeper extension but block everything else.

What I have done so far:

Created a preference file profile using the below settings

Preference domain name: org.mozilla.firefox

Property list file: (see code snippet below)

Applied this to a device group that contains my test macOS device running 15.7.1.

However, I have left the device on for several days but this configuration profile never applies to the test machine. When I click on macOS > configuration > firefox whitelist > it always shows succeeded =0, error=0, conflict=0 and not applicable=0.

I can 100% confirm this device is in the device group I am using.

Can anyone see what I am doing wrong, any help appreciated?

Thanks

3 Replies

  • navs1699's avatar
    navs1699
    Copper Contributor
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
     "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
    <plist version="1.0">
    <dict>
      <!-- This enables reading policies from macOS preferences -->
      <key>EnterprisePoliciesEnabled</key>
      <true/>
    
      <!-- All Firefox policies go under this 'Policies' dictionary -->
      <key>Policies</key>
      <dict>
        <key>ExtensionSettings</key>
        <dict>
          <!-- Default: block everything -->
          <key>*</key>
          <dict>
            <key>installation_mode</key>
            <string>blocked</string>
          </dict>
    
          <!-- Allow Keeper by its Add-on ID -->
          <key>KeeperFFStoreExtension@KeeperSecurityInc</key>
          <dict>
            <key>installation_mode</key>
            <string>allowed</string>
          </dict>
        </dict>
      </dict>
    </dict>
    </plist>

     

    • UC_451435's avatar
      UC_451435
      Copper Contributor

      Is mailto:KeeperFFStoreExtension@KeeperSecurityInc right ID? 

      • navs1699's avatar
        navs1699
        Copper Contributor

        yep, copied and pasted it from the firefox browser itself.

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