Firefox 社群討論區

Unable to install ad blockers; keep getting a message that ad blocker i"s corrupt."

Never had this before from Firefox - what do I do? The ads are disturbing me!

The Trend Micro Toolbar extension for Firefox is no longer available as shown in the page: https://addons.mozilla.org/en-US/firefox/addon/trend-micro-toolbar/?ProductSKU=HE_Global i contacted trend micro support and they mentioned they have submitted the latest version last october and since then the extension hasn't been approved yet from firefox team. Can you please update me when the extension will be available again?

Current response is as follows:-

Oops! We can’t find that page

If you’ve followed a link from another site for an extension or theme, that item is no longer available. This could be because:

   The developer removed it. Developers commonly do this because they no longer support the extension or theme, or have replaced it.
   Mozilla removed it. This can happen when issues are found during the review of the extension or theme, or the extension or theme has been abusing the terms and conditions for addons.mozilla.org. The developer has the opportunity to resolve the issues and make the add-on available again.

Try visiting the page later, as the theme or extension may become available again. Alternatively, you may be able to find what you’re looking for in one of the available extensions or themes, or by asking for help on our community forums.

Hi.

Why i CAN'T uninstall the adobe plugin?

Firefox don't let me uninstall it cause it doesn't have the option to uninstall it at all.

Is there a way to completely uninstall only the adobe plugin???

Hi everyone,

I recently built a small Firefox extension for my website https://calcolo-stpendionetto.it https://calcolo-stpendionetto.it , which helps users calculate their net salary in Italy using updated IRPEF and INPS rates.

However, when I try to upload the extension to addons.mozilla.org addons.mozilla.org (AMO), I keep getting this error message: Signing is not possible due to an error with the manifest file

{

 "manifest_version": 2,
 "name": "Calcolo Stipendio Netto",
 "version": "1.0",
 "description": "Calculate your Italian net salary (IRPEF, INPS, regional tax) quickly.",
 "icons": {
   "48": "icons/icon48.png",
   "128": "icons/icon128.png"
 },
 "browser_action": {
   "default_popup": "popup.html"
 },
 "permissions": ["activeTab"]

} I also tried switching to manifest_version 3, but then Firefox gave a warning that some properties like browser_action are deprecated or not recognized.

Has anyone experienced the same issue when uploading finance or calculator-related extensions? Is there a new manifest format or signing rule I might be missing for Firefox extensions?

Any help or examples from working extensions would be greatly appreciated. Marien Klin

On the https://addons.mozilla.org/en-US/firefox/addon/nordvpn-proxy-extension/ tab, NordVPN appears to be installed as the button indicates "Remove". I have logged into NordVPN but do not have the NordVPN icon in top-right corner.

Configuration: Windows 10 just installed: October 14, 2025—KB5066791 (OS Builds 19044.6456 and 19045.6456) FireFox: 143.0.4 (64-bit)

I'm having trouble getting my extensions to show up in the toolbar. Every help article has you start with the puzzle piece icon for extensions, but this is missing from my toolbar. I've tried right clicking to 'customize toolbar' and I am able to drag a extensions icon around, but it's grayed out and doesn't appear when I apply the new settings. This is making my browser virtually unusable since I can't access my password manager, etc.

In short, the extensions icon is missing from my toolbar and no menu options I've found will restore it. Please help!

I’ve developed a Firefox extension similar to the RankingsFactor SEO Chrome Extension, which analyzes on-page SEO elements such as meta tags, headings, links, and canonical tags.

The core functionality works fine in Chrome, but when I ported it to Firefox using the WebExtensions API, I’m facing permission issues while trying to access or read the page content (DOM).

Here’s what I’m trying to do:

Inject a content script to read <meta> tags, headings, and links.

Display this extracted data inside my extension popup.

However, in Firefox, the script doesn’t seem to have proper access to the page DOM — even though I’ve included "permissions": ["activeTab", "tabs", "<all_urls>"] in manifest.json.

I’d like to know:

Are there any additional permissions required in Firefox to read page content?

Does Firefox handle activeTab or content_scripts differently than Chrome?

Is there a specific event or user action needed to grant temporary permissions?

Any help, code examples, or guidance on fixing these permission restrictions would be appreciated.