Add-on could not installed with firefox 114.0.2, but install success with latest firefox 137.0.2

Add-ons
1

my add-on signed by mozilla
it could not be installed with firefox 114.0.2.
image

but it could be installed with latest firefox 137.0.2

here is my manifest.json

{
  "manifest_version": 2,
  "name": "gt3Helper",
  "version": "1.0.1",
  "description": "\u66f4\u597d\u7684\u670d\u52a1\u4e8e\u7535\u5b50\u7a0e\u52a1\u5c40",
  "icons": {
    "48": "icons/inc.png"
  },
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/inc.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "gt3Helper.js",
        "popup.js"
      ],
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gt3Helper@servyou.com.cn",
      "strict_min_version": "80.0"
    }
  }
}
2

I’m not an expert on signing of extensions, but Mozilla recently did an update of the certificate used for signing, which I believe as minimum requires you to use Firefox 115 ESR.
Firefox ESR 115 is compatible with win7/8 and still receives security updates (at least a few months more?). I would not recommend using an older browser than that to anyone.
Any particular reason you need to support Firefox 114?

Update:
ESR 115 support is extended for Windows 7-8.1 and macOS 10.12-10.14 up to September 2025.

2 Likes
4

I also tried version 127 of Firefox, and it still doesn’t work.

We use version 114 because we need to be compatible with lower versions of Firefox.

5

Firefox ESR 128 also works and all “normal” versions from (as far as I remember) Firefox 128 and forwards.
I still don’t understand why you “need” to be compatible with older versions than that. And I’m afraid it is not possible anymore.

6

We are using add-on in an intranet environment.
its not easy to upgrade to the latest version

7

There are some special workaround solutions mentioned at the end of this article:

But still, using such an old Firefox is quite insecure as it contains some zero day vulnerabilities that doesn’t require any user interaction (sometimes all you need is a single bad WebP image).

1 Like