Forum der Gemeinschaft Firefox

How do I reinstall Firefox FROM SCRATCH when older settings (but not the .exe itself) is still on a Windows PC? Will deleting all entries in Windows Registry fix it?

Background is that I switched Sata cables for some hard drives (for an unrelated experiment), of which one contained the Firefox installation on D:. Then I ran Firefox, and somehow it seemed to work and I also was promted to install an update which I did. After some days I switched back Sata cables. Now I cannot uninstall old instances of Firefox that I can see in Win Settings -> Apps. Worse, I cannot install Firefox anywhere AND also make Firefox running without a crash after a few seconds. To remove all info in registry and hard drives might be the way to solve this?

The operating system is Win11 Professional 24H2, the browser version is 141.0 (64 bit)

When I use Firefox to open any webpage and upload files, the browser will freeze. Specifically, the browser cannot perform any operations (including clicking on webpage links, switching tabs, scrolling pages, opening debugging interfaces with F12 ...). The larger the uploaded file, the longer it will freeze. However, for the same website on this computer, using Edge or other browsers, there will be no lag. But I don't think the above malfunctions are caused by the operating system version or browser version. Because this malfunction has been present for a long time, the computer's operating system and browser have been constantly updated, and no matter what version is updated, there will always be this malfunction

Would it be possible to code in an F-key that would automatically send a URL to Chrome in the case where you attempt to view a page or video in Firefox and it hangs or just does nothing? Then with one key we could just be taken to Chrome where the page would work correctly! That would be just awesome! Firefox has really gone down the tubes as far as reliability is concerned. I only use it because I prefer the layout but when it fails (every day multiple times) Chrome is the solution and it always works. Why is this? Can't the FF folks write a decent package that works?

As a user in China, since the domestic version of Firefox was discontinued, I switched to the international version. However, I’ve encountered a frustrating issue regarding how history entries open: When I click on a history entry in the right-side history sidebar, it overwrites my current tab by default. To open it in a new tab, I have to manually press the Ctrl key while clicking — which breaks my long-standing browsing habit. Previously, in the version I used (the domestic variant), a simple click on a history entry always opened it in a new tab. Strangely, the left-side history panel (if applicable) also opens history entries in new tabs without overwriting. This inconsistent behavior between the sidebar and other interfaces is confusing. I understand some users might prefer overwriting the current tab, but flexibility is key. Could Mozilla add a configurable setting (e.g., in about:config or the preferences menu) to let users choose:

   Option 1: Overwrite the current tab when clicking history entries.
   Option 2: Open history entries in a new tab by default.

This would respect diverse user habits and resolve the mismatch between the sidebar and other history interfaces. Thank you for considering this improvement! 我是一个中国地区的用户，因为国内的停运了，现在更新了国际版的火狐，但是在用到国际版的火狐中，我遇到了这个问题：在当我点击历史记录时，会把我当前的标签页覆盖，如果需要不覆盖当前标签页，则需要我按住ctrl再点击。在这之前，我用的版本一直都是在新标签上打开历史网址的，然后我发现在左侧的历史记录这，点击历史记录则不会覆盖标签页，也是新打开一个标签。这让我很苦恼，我之前一直的习惯逻辑都是点开就可以了，而且是点开右边的历史记录侧边栏。我希望能够增加个设置什么的，可以给予用户选择的权利，如果有人希望点开历史覆盖当前页面，则覆盖，希望新打开标签页的则可以打开新标签页。

I am trying to preserve my POCKET data before it all goes away. Mozilla responded to my email requesting data but when I opened the link I got this message that "the provided token has expired : despite it being less than 24 hours. Plus a lot of other characters meaningless to me. What can I do now?

This XML file does not appear to have any style information associated with it. The document tree is shown below. <Error> ExpiredToken <Message>The provided token has expired.</Message> <Token-0>

I have my credit card info saved and previously I could click on a credit card and it would autofill the numbers for me. Now the credit cards still show up when I click on the space to put the credit card number in but but it wont fill the info into the form. I just get a blank space after I click on the saved credit card. Any suggestions on how to fix this? Thank you for your help.

Cary

Every time I try to connect my domain to my website on solo AI web developer site, I get an ssl or cashe or connection error with a

Secure Connection Failed

An error occurred during a connection to login.ionos.ca. SSL received a record that exceeded the maximum permissible length.

Error code: SSL_ERROR_RX_RECORD_TOO_LONG

   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.

not sure whats happening?

please help if you have time,

thanks, Dan Westwood

Ive been using firefox for a while and i heard that you guys send out stickers and id love to aquire a couple stickers to put on my locker, thank you for your time.

Dear Firefox China Team, After reinstalling Windows on 2025-07-22 and installing I signed in with the same Firefox Account (this one). Unfortunately: • No bookmarks, passwords, history or extensions were restored. • I believe “Sync” was enabled before the reinstall with all data types selected. • The UI only shows “Syncing…” but no data appears. Please help:

   Check whether any sync data exists for this UID.
   • If yes, explain why it is not downloading and provide recovery steps.
   • If no, supply official evidence (e.g., server-side log) showing zero data.
   If my data (bookmarks, logins.json/key4.db, form history, add-ons) is on your servers, kindly export it to me in an encrypted archive or provide a temporary secure download link.
   Advise how to prevent this “appears-to-be-synced but actually not” scenario in the future (mandatory manual backup, verification methods, etc.).

Troubleshooting already done: – Confirmed same account, same email. – Reset services.sync.* prefs to default. – Manually triggered sync; about:sync-log shows no error codes. – Created a fresh profile; still empty. Please reply at your earliest convenience so I can continue using Firefox with confidence. I am ready to provide Sync ID or any logs you need. Best regards,

I have Mozilla Firefox as my browser on my i phone. I noticed an exclamation symbol saying" enter your PW to connect". I go to firefox.com/pair on my desktop. I navigate to the QR code and take a picture. I confirm the desktop with the i phone. Then it asks for 2 step verification code from an authenticator. I don't get one. So I download an Authenticator app. And nothing shows up there either. The problem is getting a code from an authenticator to complete the process. What should I do?

I am logged into my computer. When I try to sync my phone Firefox with my computer, I am asked to provide a number from an authentication app. I don't have any such authentication app and can't figure out what the Firefox one is. There does not seem to be a workaround. I can't use a backup code or reset option. I am trying to figure out what to do.

Thank you

Hello! I contacted you with a problem with the impossibility of installing two-factor authentication on my account. Despite successfully entering the code and saving backups, two-factor authentication disappears immediately after refreshing the page. Mozilla stores all my passwords and data - therefore, two-factor authentication is very important for my account.

Hi All,

I am trying to setup 2-Factor Verification for my Mozilla account however every time I enter in the 6 digit code it shows up with "Invalid or expired code. Check your authenticator app and try again."

And I am positive I am doing it right. As I would normally do it; scan the QR code, enter in the 6 digit code.

If anyone has the same issue or solved it, please let me know.

Does Firefox "remember" any browser data from another Windows user account? I created a guest account for someone today and while I was browsing, I got redirected to a site called fy3 dot fit which had the fake captcha. I did not open the run box and did not paste any commands from it, so is the guest account compromised or do I need to nuke Windows and start again? I read on reddit that it's an infostealer but if Firefox does not remember the other user account's browser data, does that mean nothing would be stolen if I did run it?