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I have recently been getting an error message when I open Firefox saying "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem". This has been happening since I clicked on a mail in Mail to unsubscribe from a spam/phishing mail list, which seemed to result in me installing Firefox Private Browsing, which I had never subscribed to. I have tried uninstalling Private Browsing but there is no way of doing that. I have even uninstalled and then re-installed Firefox completely but I still have the same problem. Because of the problem I have now lost all my bookmarks and history, and am unable to create new bookmarks and history. I have been on the help forums and seen that I can Disable Private Browsing by going through my anti-virus (Avast), which I have not yet tried because what I would really like to achieve is uninstalling and not having Private Browsing on my Start menu, rather than simply disabling it. Anyway, would disabling it solve the bookmarks and history problem ? Can anyone give me the solution ? Thanks. As you may gather, I am not very techno so you would have to give me the idiot's version of any instructions or advice.

Hello, I've chatted with the creators of the add on "Twitter X Ad Blocker" and asked why it isn't working any more. They told me they have an update made and ready but you have not approved it yet. What will it take to get you to approve the update so this will work again?

Thanks, Tracy

Hello, I have problem with firefox. When I try download from facebook page files .docx, .xlsx (Microsoft Office) Firefox automatically download it as PDF and file is broken. I don't know how to repair this. Please help, it is very frustrating.

Hi need to get my old firefox back before installation of new version.

I have a subscription that allows for downloading of videos using a "DOWNLOAD" button that has disappeared after new version of firefox was loaded. also my antivirus application has disappeared. How do i put everything back the way it was. I'm using windows 10.

Please help

I have been using Firefox as my preferred browser on Windows 10 Home and Pro systems for a considerable time and have recommended it to many Windows and Android users.

Windows 10 Home ver 10.0.19045 has recently been unable to access many well-known websites due to

Secure Connection Failed - An error occurred during a connection to <website's https url> PR_END_OF_FILE_ERROR.

There are multiple reports of this problem from 2023 up into 2024 in Mozilla support and across the web, but no solutions. Curiously all of the problem reports mention Firefox not any other browser. Suggestions to try multiple fixes, but none have resolved the problem.

One posting on Mozilla Support marked RESOLVED says the problem mysteriously went away for that user. Lots of people still seem to be having this problem, so how about a fix.

Sent from Brave browser,

It was working fine and now the past few days I can no longer login to my Fastmail.com account other than from my Windows 7 pc

So no one including Firefox can email me

My email address is [edited] @roadrunner.com Since early May, I haven't been able to get emails because I keep getting asked for a master password. I don't know it - I don't remember ever having to create one. Please help.

I can no longer connect to X ray images using your browser. The links are in EPIC. The X ray system is eUnity. If I can no longer connect I will have to switch browsers.

Your browser says: Secure Connection Failed

An error occurred during a connection to webpacs.cei.med.umich.edu.

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

I am trying to email a link from chatgpt to my yahoo email account. When I try to open the link I receive the error 500 internal server message. I have emailed links from chatgpt many times before with no problem. Can you advise.

Thank you Barbara Krausher

I am trying to sync my addons to another computer. Apparently the addons I have on the primary computer are not synced to the server. The sync-log says "[addon] not syncable: is foreign install." The About Sync addon shows that data for two addons are on the server, one of them About Sync, while I have a lot more on my primary computer. I may have synced the addons from the secondary computer first, so that might explain why the server knows only about two addons.

So I am trying to wipe the addon data from the server and sync the addons from my primary computer. I have signed out all but the primary computer from the Mozilla account. I have tried signing in and out of the Mozilla account and changing the password to wipe the server data, but that does not seem to work.

Wiping the addon data via About Sync > addons > Engine Actions > Wipe addons does not seem to work, either. After syncing About Sync shows that there are two addons on the server again.

What else can I try to wipe the addon data on the server or to sync my addons from the primary to the secondary computer?

Recently my browser will open a Settings tab whenever I click on an autofill dropdown selection. Any autofill selection from username/passwords to simple Name/phonenumber/etc autofills. It's very annoying and I can figure out why it's doing it. How do I make it stop? I'm running Firefox 126.0.1 (64-bit) on a Windows PC.

Why do I need a new profile every single little update? How can I get my saved session, bookmarks, history, open tabs, extensions and preferences from my old profile? Manually copying files from the old profile is not a solution - it's a workaround and not a great one. Lots of things get left behind. Alternatively: what file in my "old" profile do I need to manipulate to trick Firefox into using it with the new version?

My system repeated asks if I want Firefox to be my default browser. Equally as many times I have indicated yes but why doesn't it stick? Running Win10 latest update. Please help me get rid of this annoyance.

When I open Firefox, it is only a quarter of the browser in the right-upper quarter of the screen. How can I make it so the browser opens fully in the entire screen.

Hi,

The Lower Toolbar is quite handy, with for example Roboform.

Unfortunately, the way it's implemented, it comes above the lower part of the browser window, instead of being inserted at the bottom while the browser windows height is reduced.

That hides the search box when you type Control-F.

It would be nice if this could be addressed in a future release. I am using Firefox Developer 127.0b2.

Hi,

On this site:

https://www.opensubtitles.org/en/search/sublanguageid-eng/idmovie-1380901

selecting a sub and trying to download gives "The page is not redirecting properly"

I am using Firefox Developer Edition 127 b07, and that happens also in safe mode.

It used to work not too long ago with FF, and it works with Chrome latest.

I usually download and install manually the custom install of Firefox on Windows.

Recently, a new version was automatically installed without my permission and destroyed all my customization. THIS IS UNACCEPTABLE. I had to restore the older version from backup and I was going to stop updating.

But I see that the manual custom installation is still available for download.

I want to make sure that if I use it it will not wipe out my customization again.

Please confirm.