Diễn đàn hỗ trợ Firefox

Over the past few updates, I’ve noticed an issue with Firefox where it no longer restores my previous session when reopening the browser.

I normally keep four tabs pinned and about five additional tabs open for browsing and work. In the past, I could simply click the X to close Firefox, and when I reopened it, all my tabs that are pinned and unpinned would automatically come back. Recently, this stopped happening. Now, if I close Firefox, it opens with a fresh window instead of restoring my previous tabs.

I’ve already checked the setting under General/Startup, and Open previous windows and tabs is enabled. Because of this issue, I avoid closing Firefox entirely, since rebuilding all my tabs each time has become a hassle.

Is there a way to fix this? Any suggestions would be appreciated.

Thanks :)

To start, both Windows and Firefox are running latest versions as of now.

I recently found that Firefox had a list of frequent sites being displayed by right-clicking on any of the Firefox tabs in the Windows taskbar. I found that to disable this, I need to use the "browser.taskbar.lists.frequent.enabled" flag in "about:config". Setting this to false indeed disabled this, but it was replaced by "Recent" tabs instead. There is also "browser.taskbar.lists.recent.enabled" flag but this does not affect whether or not the Recent tabs list is displayed. Nor does "browser.taskbar.lists.enabled", nor does changing the max number of list items.

The closest I can seem to get it to displaying nothing here is to keep the Frequent list active, and set it to a max of "1" item. Anything else displays a long list of Recent items.

I don't think this is correct behaviour for these flags... If anyone has any other ideas here, that'd be great, thanks!

firefox is my browser. i have windows 11. all of my web (not app) shortcut icons on desktop are the white blank page icon. i used to see the icons for the sources -- the newspapers, etc. none of the standard windows fixes for this have worked. was there a firefox policy change that causes this? i Free Up Space to Onedrive for everything on desktop, but even when I apply Keep on This Device, the source icons still don't appear, so I don't think Onedrive is the issue. in some unsynced folders on the PC, web links appear with a generic blue planet icon, which is as generic as the white page icons on the desktop. I've tried the fixes for windows 11 but none of them have worked. any ideas of a firefox fix for this? thanks!

"Please create a new version of the browser app that supports the ability to use FileSystemAPI on directories, this is essential for working with a BeatBuddy project and SD cards that are saved on my computer using the online editor."

When using Firefox on a Mac, how can we set the Mozilla VPN to one specific country for one tab only? There are instructions for doing so, but it's only applicable to Firefox for Windows.

When right-clicking on the Firefox icon in the Windows task bar one can pin entries, which then appear in the "Pinned" section of that menu. The description is taken from the title of the website at that point in time.

I would like to rename one such entry (i.e. change the description). How can I do this? The context menu only contains the options "Open" and "Unpin from this list".

When right-clicking on the Firefox icon in the Windows task bar one has the option to "pin" items by hovering over an entry in the "frequent" list and clicking on the little pin needle icon (with the hover text "Pin to this list").

How can I pin items that are not in the frequent list? I have tried for weeks to make an important page a frequent one by making sure to visit it daily but it never makes it to the list.

Suddenly Firefox has begun to play bell tones for clicks with my mouse.

I am unable to disable this new behavior. It is ONLY happening with Firefox. No other browsers behave in this manner.

My PC sounds are shut off.

I never want bell tones ever at any time. Please help me discontinue this behavior as soon as possible. As someone who works with professional audio recording this is especially undesirable and disturbing.

Please. Somebody. Stop the madness.

Thanks!!

Please make life easy for normal people and add a big button in the settings "disable all AI". It is a pain to go through all the settings looking to disable it (if that is even configurable -- the fact thatit comes enabled by default feels like it is actively undermining my trust in what has been the best and most trustworthy browser for *decades*).

I do not need AI, I do not want it, I have severe ethical and security concerns about it. If you are hell-bent on adding it anyway, please make it trivial to entirely opt out.

1. 1. 1. Setting Up Grok as an AI Chatbot in the Firefox Sidebar

Mozilla Firefox includes an experimental-turned-standard feature (introduced around version 131 and stabilized by version 133+) that allows users to integrate AI chatbots directly into the browser's sidebar for quick access while browsing. This provides a persistent chat interface without needing to switch tabs constantly. Natively, Firefox supports providers like ChatGPT (OpenAI), Gemini (Google), Claude (Anthropic), Le Chat (Mistral), and others through a dropdown selector. However, Grok (from xAI) is not included in the official list and must be added manually as a custom provider.

The screenshot you provided shows the standard Firefox "Proceed with Caution" warning when accessing `about:config` (the advanced preferences page), alongside an open tab at `https://grok.com/` displaying the SuperGrok interface. This strongly indicates the setup process for adding Grok via a custom configuration tweak, which loads the full Grok web app into the sidebar (essentially embedding `grok.com` in a framed view).

1. 1. 1. 1. Requirements and Context

- **Firefox Version**: Version 133 or later (as of early 2026, most users will have a newer version; check via Menu > Help > About Firefox). - **Account Needs**: You'll need an xAI/Grok account (free or SuperGrok/Premium+ subscription) for full access. Logging in within the sidebar will persist if cookies are allowed. - **Limitations**:

 - Only **one** chatbot can be active in the sidebar at a time.
 - Custom providers like Grok load the full web version, so interactions send data directly to xAI (no Mozilla intermediation, preserving Grok's native features like image generation, voice mode if available, or real-time search).
 - Performance may vary; the sidebar uses an embedded view, which could consume more resources than native integrations.
 - Privacy Implications: All queries go straight to the provider's servers. Review xAI's terms for data handling.
 - Persistence: The setting generally survives restarts, but closing/reopening the sidebar or browser resets might occasionally require re-login.

- **Nuances and Edge Cases**:

 - If you're on a free Grok plan, usage quotas apply (higher with SuperGrok).
 - Features like page summarization (highlight text > right-click > AI shortcuts) work if Grok supports context from the main tab.
 - Mobile Firefox does not support this sidebar feature.
 - If the sidebar doesn't appear after setup, ensure it's enabled in settings.

1. 1. 1. 1. Step-by-Step Setup Instructions

1. **Update Firefox (Recommended)**:

  - Go to Menu (three lines) > Help > About Firefox.
  - It will check for updates automatically; install any available.

2. **Access Advanced Preferences**:

  - In the address bar, type `about:config` and press Enter.
  - You'll see the "Proceed with Caution" warning (matching your screenshot).
  - Check the box for "Warn me when I attempt to access these preferences" if desired, then click **Accept the Risk and Continue**.

3. **Configure the Custom Provider for Grok**:

  - In the search bar at the top, type `browser.ml.chat.provider`.
  - If the preference exists, double-click it.
  - If it doesn't exist, click the "+" button to create a new string preference named `browser.ml.chat.provider`.
  - Set the value to: `https://grok.com/` (or `https://grok.x.ai/`—both typically work, but `grok.com` aligns with your screenshot and SuperGrok branding).
  - Click the checkmark or press Enter to save.

4. **Enable and Open the Sidebar**:

  - Go to Menu > Settings (or Preferences) > General tab.
  - Scroll to "Browser Layout" section.
  - Check **Show sidebar** if not already enabled.
  - Close settings.
  - Click the **Sidebar icon** in the toolbar (it looks like a panel; if missing, right-click toolbar > Customize Toolbar > drag it in).
  - In the sidebar, look for the **sparkle/AI chatbot icon** (or it may auto-load the chat interface).

5. **Access and Use Grok**:

  - The sidebar should now load Grok directly.
  - Log in to your xAI account if prompted (for full features like Grok 4 access or higher quotas).
  - Start chatting via the "Ask Grok" input at the bottom.
  - Optional shortcuts: Highlight text on a page > right-click > options like "Summarize," "Explain," etc. (Grok will process based on context).
  - To switch back to a native provider later: Return to `about:config`, clear or change the `browser.ml.chat.provider` value, then select from the dropdown in the sidebar.

1. 1. 1. 1. Troubleshooting and Alternatives

- **If Grok Doesn't Load**:

 - Clear the preference value and restart Firefox.
 - Ensure no extensions block iframes or cookies.
 - Try alternative URLs like `https://x.com/i/grok` if issues persist.

- **Reverting Changes**:

 - Set `browser.ml.chat.provider` to blank, or delete the preference.
 - Native options will reappear in the selector.

- **Alternatives if Native Setup Fails**:

 - **Extensions**: Search Firefox Add-ons for "Grok Sidebar" or similar (e.g., dedicated Grok integrations exist, often free).
 - **PWA Installation**: Visit `grok.com`, click the install icon in the address bar to add as a standalone app window.
 - **Other Browsers**: Edge/Chrome have similar sidebar AI features (e.g., Copilot or extensions) with easier Grok support.

- **Implications for Daily Use**:

 - Great for multitasking (e.g., ask Grok about a webpage without leaving it).
 - Enhances productivity but increases browser resource use.
 - As an experimental feature origin, it may evolve—Mozilla could add official Grok support in future updates.

This method provides the most integrated experience matching your screenshot. If you encounter issues or need clarification on a step, provide more details!