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Hello,

I used to deploy add-ons via group policies - this worked like a charm: Firefox esr (91.11.0esr x64), ADMX-templates in Sysvol\PolicyDefinitions, Group Policies: User configuration, administrative templates, mozilla, firefox, add-ons --> install add-ons --> https://addons.mozilla.org/firefox/downloads/file/1234567/goodaddon-1.0.01.xpi

A few months ago, we had to change our network-configuration. We were using a proxy before, but our proxy had direct access to the internet. Now our proxy forwards everything to another proxy. Since about that time, add-on-deployment via gpo doesn't work anymore. It could be something else, but i suspect the proxy-change.

I tried to deploy unc-paths, internal websites and different syntaxes; none of this works:

• http://192.168.100.10/goodaddon-1.0.01.xpi
• http://internalwebsite/goodaddon-1.0.01.xpi
• https://192.168.100.10/goodaddon-1.0.01.xpi
• https://internalwebsite/goodaddon-1.0.01.xpi
• \\192.168.100.20\netshare\goodaddon-1.0.01.xpi
• \\internalfileserver\netshare\goodaddon-1.0.01.xpi
• file://///192.168.100.20/netshare/goodaddon-1.0.01.xpi
• file://///internalfileserver/netshare/goodaddon-1.0.01.xpi

As you can see I tried using internal sites, so that no proxy would be needed. And I also added these sites to the allowed add-on-installation-sites (computer configuration, same group policy). The sites are all accessible; if I enter these addresses as url, firefox can access the xpi-file.

I know how to pack add-ons into the firefox-setup-file; that still works. But first of all, firefox is already installed on most of my clients. Second, after a fresh installation of firefox with this self-created package, all add-ons are installed, but not activated. And I would like to restrict activation/deactivation of add-ons via gpo.

1. 1 Are there other ways to deploy add-ons in a domain-network (e.g. script-based)?
2. 2 Are there any logs where I could find out what exactly goes wrong?
3. 3 Are there any other syntaxes I could try (group policy urls)?
4. 4 Can anyone guess what the problem is (why it is not working anymore)?

Help would be very much appreciated.

Best regards.

Hello! My Firefox version is 91.11.0esr Several months ago Firefox starts behave this way. It's much more convenient when speaker button always appears on tab. It's absolutely incomprehensible why developers did it with Firefox. Who likes to waste time searching for noisy tab. I wish it work like before.