I-Firefox Community Forum

Hi,

I use Firefox app in macos, android and ipados. The bookmarks across them are not synching automatically. I need to press sync manuelly to do. All apps are updated, all settings look fine. Please help me synch bookmarks across platforms. Thanks a lot.

Firefox will only start if I sign in as an administrator. It doesn't connect to the internet, and I can't get to the help screen. I did a refresh but that hasn't help. If I uninstall and then reinstall a new copy correct the problem? How do I save and reinstall my bookmarks and settings? I love Firefox and prefer it over other browsers. But I need to fix it and any help you provide will be very much appreciated. Thank you!

with this new version i lost everything i need to get back to an older version and get all my extentions my bookmarks back all my s desktop items that i had linked to firefox are gone i can no longer get face book or anything back to firefox book marks every thing i had with firefox

and

FF is offering up possible login names for a particular site I have used previously even though I have removed all related browsing history, form data, and cookies (and cleared the cache). What am I missing? Is it using stored history for unrelated sites to guess at a user name, or is there some other hidden history I need to clear?

1. 1. Steps to reproduce

Open several tabs, in settings, check «ouvrir les fenêtres et onglets précédents», quit firefox.

1. 1. 1. Expected behavior

On startup, Firefox should reopen with the same tabs before shutdown.

1. 1. 1. Actual behavior

Firefox opens with one empty tab. Forcing me to got to «history -> recently closed windows -> restore» everytime I quit Firefox or shutdown the mac.

1. 1. 1. Device & build information

• Device: MacOs Tahoe 26
• Build version: firefox 148.0.2
• First seen version: MacOs Sequoia

1. 1. 1. Notes

Fresh migration from Win 11 to Mac. tabs, passwords, bookmarks, plugins migrated from win to mac. Attachments:

I use Firefox on a Mac to access Brightspace for my classes. I also use Grammarly. When copying text from the Grammarly widgets and pasting it into the Brightspace HTML editor, the text is stripped of hard returns, causing paragraphs to collapse without any breaks between them.

I have tried pasting as unformatted text, and the issue persists. This issue does not occur in Chrome, so I suspect it is due to how Firefox handles clipboard data. I have not found a workaround or resolution for this.

Latest version of Firefox on macOS, Mac Mini M2 - 8 GB RAM and MacBook Air M3 - 16 GB RAM: Firefox malfunctions on launch - I have to force quit and relaunch it - Firefox starts to load then freezes. Firefox works, then I launch other applications like Chrome, Thunderbird, etc. Firefox freezes on the M2 8GB RAM but rarely on the M3 16GB. A few weeks ago, these problems didn't exist on either of my Macs - since an automatic update that I didn't notice, it's now a consistent occurrence.

This has started a few days ago. I'm running Firefox Desktop on Windows 11. Browsing is perfectly normal, until I try to watch a video in full screen mode. It plays normally for a few seconds and then my whole system freezes, with no response to any action except for hard reset. This has never happened to me before, and all other browsers I try do not demonstrate the same problem. Is there any solution other than changing browser permanently?

A user I am servicing uses Firefox every day. They are on Windows 11. Every afternoon (sometimes at other times), Firefox stops working and loses its internet connection (everything else on their computer continues to be connected).  When they close and restart Firefox to reconnect, it then tells me the user that they are using an old profile and need to create a new one.  They're able to re-log into their Firefox account, which eventually resyncs all their data, but they then have to re-sign into everything, which is a major inconvenience.  The only workaround the I have found is to reinstall Firefox, ever time this happens which then allows the user to use all their settings until they have to repeat the process the next day (i.e., everything remains signed in and/or logging back in is easier than described above).

Thank you for the help! I'm wondering if other AI chatbots, Lumo, in particular, will continue to be added as options to the updated sidebar? An unofficial extension exists (https://codeberg.org/daskashk/lumo_ai_by_proton_chat_in_sidebar) that adds the ability for a link to appear in the sidebar. However, it does not offer the full integration that the official browser update provides to the other supported LLMs. I like Lumo for its privacy, encryption, and the ability to make "Projects." Thanks again for the help.

I started using a new laptop and when I receive emails through Outlook, the excel attachments won't open and I get a message saying that I don't have the pdf software. These are Excell files, not PDF. I've tried all the suggestions on-line but they still won't download as Excel files, only Firefox files.

Hi, I opened Firefox to continue with my work, just to get greeted with a 'start a new profile' page. All my profiles, saved data, history, add-ons and customization, were discconected/removed. Even on my phone it logged me out from my account- logging back in doesnt retrieve my history from my previous sessions on my desktop device.

I tried logging in to my account, checking if theres an 'old firefox' folder on my device or anything like that, but it did not retrieve any of my old data.

Just to clarify, I have not played around with my settings, left or deleted anything, so I really dont understand why I've just came back to nothing.

Was wondering why this happened, how do I know this won't happen in the future, and if, when possible, how can i get all my data back?

Thanks

I was able to install it on my Mac mini running OS mountain lion with no problem but This is the error message I keep getting on my IMAC OS10.15.7 Catalina (attached): current browser is safari ver 15.6.1. Your help will be greatly appreciated!

I noted, that credit cards autofill works, but on ~50% of websites it fails. I can see the autofill dropdown, but if I select any card, no fields are filled. Manual filling works. One of examples: https://ipn.paymentus.com, but there are many. Again, on some websites it works just fine.

Another issue - I cannot edit cards. Settings->Payment methods->Manage, then select a card, press "Edit" and nothing happens.

Context: version 148.0 (64-bit), Canonical snap build (crap, I cannot DISABLE snap build and totally switch to deb!!!)

P.S. I really miss feature to add "aliases" for cards...

Ordered some new checks from Costco as a "guest" since I haven't set up an online account (generally speaking, I wouldn't use, but to order checks, I need to do it online - not in the store). I put my full order together in the cart, went through the full process of completing the order and payment, but after submitting, I expected the order confirmation page. However, I received the notice that the Harland Clarke check printing vendor site won't allow firefox to display the page. Without that confirmation page, I don't have an order number to reference. The instructions provided says to embed the link (which link?) in another tab to open the missing page. I've also tried following all other instructions; going on the Mozilla/Firefox desktop/ trying to find a Mozilla contact phone number, etc. All that happens is that I go into a never-ending circle - which means no-where. What am I missing? This is what I get:

Fix error “Website will not allow Firefox to display the page.” 3–4 minutes

Firefox, Firefox for Android Firefox, Firefox for Android Last updated: 8/24/25 36% of users voted this helpful

Some websites don’t allow their content to appear inside another website. If a site tries to embed a page that blocks this, Firefox will show an error that it cannot open the page:

“To protect your security, [website] will not allow Firefox to display the page if another site has embedded it.”

This is a security feature on the website being embedded. It prevents clickjacking, where a site tries to load another site without permission, often to trick users into clicking something they didn’t intend.

This error is not caused by Firefox. It’s a choice made by the website owner. Why does this happen?

Websites can control how their content is used. They may block it from being shown inside another site using special security settings like:

   X-Frame options headers
   Content security policy rules 

These settings are common for banking sites, schools, government services and others that need tight security. What can I do?

You can still view the blocked content by opening it directly. On desktop

   Right-click the link or embedded area.
   Select Open Link in New Tab or Open Link in New Window.
   If you can’t right-click, try copying the link (long-press on Mac trackpads) and pasting it into a new tab. 

Tip: You can also drag the link into a new tab if using Firefox on desktop. On mobile (phone or tablet)

   Tap and hold the link or embedded area (where the content should appear).
   Choose Open in New Tab from the menu.
   If that doesn’t work, try copying the link (if visible) and pasting it into a new tab manually. 

Warning: On mobile, this may be harder to do if the embedded content doesn’t show clearly. Look for a blank or gray box on the page. What if I need to use the original page?

Sometimes the website that’s embedding the content depends on that embedded page to work properly (for example, a school login system or internal portal).

If that’s the case:

   Try opening the embedded page directly (as described above).
   If that doesn’t help, you may need to contact the site owner and explain the issue. 

Need help understanding this error?

If you're unsure what the page is trying to load or can’t figure out where to click:

   Look for a blank box or missing content; that’s likely where the blocked page should appear.
   If you're on mobile, try rotating your device or zooming out to better view hidden content.
   Still stuck? Copy the page link and share it with your IT support, teacher or website admin. 

Related articles

   Firefox is stuck in Troubleshoot Mode
   Websites look wrong or appear differently than they should
   Site Permissions panel 

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