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duplicate of /questions/1587271 thread

Dell recently re-installed my Firefox program but it seems to be an older version. Although I can find my bookmarks the bookmark toolbar is gone and that was a very handy feature. How do I update the program and get my toolbar back?

Before purchasing, I verified that Mozilla VPN will work on Chromebook (shown on the FAQ page for the VPN). Since I can't install software on a Chromebook, how do I go about using Mozilla VPN on it?

All folders are shown ticked but they do not appear. I can view one folder at a time with Go>Folder>my account>Inbox(say).

Using IMAP. Firefox 151.0.4 I don't know what I could have done to cause this.

My current version of Firefox is 151.0.4 (64-bit) & for the past 2 weeks or so every time I use the search bar to google something it triggers one of those "We've detected unusual activity from your network" requiring a Captcha. At first I tried all of the typical stuff [antivirus, vpn, extensions, etc...] to make sure that wasn't the issue. But as of yesterday & confirmed today I can actually go to Google's website first & do the search from there with no issue & no captcha.

So, whatever the issue is has to do specifically with doing the search via the search bar... for some reason. Is this a bug in the browser, or is there perhaps some setting that could cause this to happen in the about:config page? Though, I doubt a setting could be it because I've changed the settings I've changed now for years without causing this issue.

The Firefox built-in VPN button disappears from my toolbar as well as from my customized toolbar options.

I wonder what is happening and I would like to recover it.

Location: France

I wanted to use the new VPN feature and the icon initially showed up in the top right, but it has disappeared and is not present in "customise toolbar" or privacy settings either.

I asked about troubles with passkeys in Microsoft password manager, not Windows Hello. The question was denied. https://support.mozilla.org/en-US/questions/1585824

I am only a home PC customer and have Windows OEM vendor's support only. It supports operation mises about Windows OS and preinstalled applications, but doesn't support Windows's bug trouble shootings. I was denied supporting from FUJITSU CLIENT COMPUTING LIMITED (known as a Japanese company, but a subsidiary of Lenovo now). I copied the raw Japanese text to avoid my failure of translating.

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パスキーのご利用について、お問い合わせをいただいております。

はじめに、恐れながら弊社では、出荷時に搭載されている OSおよび、一部のアプリについてのみ、動作確認をしております。

そのため、[Firefox]については情報を有しておらず、具体的な ご案内を差し上げることが困難です。

[Microsoft Edge]でご希望の操作が可能な場合は、こちらで ご利用いただくことをご検討ください。

なお、[Microsoft Edge]でも同様に問題が生じている場合は、 お手数ですが、[Microsoft Edge]で発生している状況や、 実施されたい作業の内容についてお書き添えいただき、再度 FMVテクニカルセンター(メールサポート)へご連絡くださいますよう お願いいたします。

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By the answer, I lost any support about trouble shooting.

I ask questions. Have Firefox development team previously confirmed that it works? Does you have Bugzilla ID about functionality check with passkeys in Microsoft password manager or something like it?

Hi. Now that the 'Open Link in Split View' has annoyingly replaced the spot previously held by 'Open Link in New Window' i keep clicking on it accidentally (muscle memory).

I don't want to have to retrain my muscle memory, but despite creating css file generated by Claude that should in theory remove the option, and putting it the Profile Folder, it will not go away.

How do i remove it?

When opening a new window on firefox I see a "homepage" (No URL offered at the top of the page), offering some helpful, frequently used shortcut icons followed by a number of headings, i.e. : Popular Today, Connections, Featured Videos, etc., providing image/links to stories from various "news" or "interest" websites, which I can click on to view. Opening a number of these sites in order to view the advertised "story" require setting up a free, or paywall account/membership, etc.. How can I eliminate these undesirable/unwanted options from being "offered" or shown on my firefox homepage? Something may look interesting, but I'm not one to sign up, or pay to view these opportunities. I see where I can eliminate entire Categories, but what I'm trying to do is block, or eliminate the "offer to view" what I deem "unwanted offers to sign up to view this "story". Can this "Junk/Bait" be eliminated from my homepage on a site by site basis? As examples: CNN, Wired", "the cut", among others. Can the page be configured to eliminate the offering of "Non-Free", "Non-Membership", "Non-Signup" Sites? (Apologies for my lack of appropriate semantics, I'm just a user, not an Internet Expert, developer, or or software-savvy person.) As an aside, is there a way to contact a real live human person at Mozilla/Firefox to assist with issues like this, or answer related questions. All I seem to find are circular links to "Contact Mozilla", which bring me to unrelated FAQ databases, and user forums, etc., where I find I'm unable to get an answer to the question asked? Thanks for reading and advising!

Hi everyone,

I run a construction estimating website where we share project-based cost estimates and detailed breakdown for contractors, architects

I’ve noticed a weird issue in Firefox lately.

Some of the heavier pages (especially ones with large tables, detailed breakdowns, and embedded content) start getting really slow or sometimes even become unresponsive in Firefox. The same pages load completely fine and smooth in Chrome, so I’m trying to understand what Firefox might be struggling with specifically.

I already tried the basic stuff like clearing cache, testing in private mode, and disabling extensions, but the issue still keeps coming back.

It seems more noticeable on pages with a lot of structured data and embedded elements, so I’m wondering if it could be a rendering, memory, or layout issue on Firefox’s side.

Has anyone dealt with similar performance issues on Firefox with data-heavy or content-heavy web pages?

What should I look into next: layout structure, CSS rendering, JS execution, or something Firefox-specific I might be missing?

Any guidance or debugging tips would be really appreciated!!

I have a number of pop3 accounts with the same mail host, but suddenly one of them gives me the message "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox."

I use Thunderbird on two Windows machines, and the problem is on both, so it is something in the interaction with the server, however, there is no problem accessing the mail via webmail directly on the server.

I have tried to change password on the account, but the problem did not go away. In fact, I got the box to tell me that the old password did no longer work, so I know that the problem pops up after log in to the account. Before the error message appears, the message "downloading 208 messages" (or something similar) briefly appears.

Is there a way to find out exactly what fails?

I have three separate Yahoo email accounts. I set up Thunderbird to link to each Yahoo email account separately. It worked fine for a year or more. On 5/25/26 one of the three Thunderbird email accounts stopped downloading emails from Yahoo. I could see at the bottom bar Thunderbird indicating that is was downloading 1 of XX emails, but never actually downloads them. There is no error message. I checked the Yahoo email account to verify the number of emails I am missing from Thunderbird and the number is correct. I can see the emails in Yahoo. I'm the only person using Thunderbird, so no changes have been made to previous settings for retrieval. I confirmed Security and server settings for Thunderbird in and out going emails, and Yahoo are correct. I tested the connection in Thunderbird, and the connection is successful. I tried to send an email from the Thunderbird account having issues, and the email was sent and received by the recipient. The recipient replied, and Yahoo received the email, but failed to download it to Thunderbird...along with all the other emails since 5/25/26. I unlinked the account and reestablished the link between Yahoo and Thunderbird, and still not fixed. I tried restarting the computer, with no change. I tried to send an email from Thunderbird to one of the other Thunderbird emails and it was sent and received. I made changes to Thunderbird to force the download of emails, and it still wouldn't do it. I turned off my antivirus, closed Thunderbird, and restarted it, and that didn't change anything. The capacity of emails on the email in question only has 739 emails, so it's not over the limit and I have plenty of storage capacity. Thunderbird is set to save emails, Cookies and cache were cleared, no change. I ran the folder repair feature in Thunderbird, but there was no change. I compared all the settings between the other Thunderbird emails that are working against the one that isn't, and they are all the same. There was a suggestion to close out of Thunderbird and delete the "Global-message-db.sqite" file from the Thunderbird profile in case it was corrupted, and it would recreate this file when Thunderbird was restarted. The file was recreated, but it didn't fix the problem. There was mention that a suspicious email in Yahoo might be blocked by Thunderbird, so I placed various emails in the spam folder, and it didn't work. I did find one email in the Yahoo spam folder that was dated before 5/25/26 and moved it to the Yahoo inbox. Lo and behold, that one email downloaded to Thunderbird. So there is something within Thunderbird preventing emails from downloading after 5/25/26. I've read many people complain about similar download failures with no solid fix. Someone mentioned it fixed itself on a day, but then stopped again days later. Someone else mentioned Yahoo changed its password protocol to transfer emails, but that doesn't make sense since the other two are still downloading based on the "old" password protocol. I'm at wits' end. Thanks for reading all of this. I hope someone has a solution.

I accidentally deleted a good number of my emails from my local Pop3 server account. I don't delete my emails from my gmail server so I can just redownload all my emails but cannot remember the prefix needed to do it.

If I recall correctly I go under settings for my email account, then go to server settings and add the prefix to my email shown in the Username field under the Pop Mail Server Section.

Can anyone remind me of the prefix?

It was like restore:[my email] or all:[my email].

I should have made a note of it as I cannot find it anywhere online now.