Firefox Community Forum

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 Firefox configured with auto-expanding vertical tabs. Sometimes, when the mouse cursor leaves the Firefox window through the same border where the tab bar is located, the tab bar expands and stays in that state until the cursor returns to the Firefox window. This is especially annoying with two displays; if the cursor hovers over the tab bar right before moving to the second display, the tab bar remains expanded, overlapping part of the browser content.

Some/All extensions don't work in build in PDF viewer. Example:

• Extension: DeepL: translate and write with AI

When: Not work when select text and hit translate.

• Extension: Dark Reader

When: Colors isn't inverted to darker tones.

Thank you, open to all help!

Hello Last year, I first saw the icons in the far right top corner of home page (red 'X' and other orange one) kept turning grey. Now for several months the entire top 'task bar' area of Firefox home page constantly turns grey, then back to regular color, back and forth, in the most aggravating way. I tried all suggestions: disabled hardware accelerations, disabled themes and extensions, cleared cache.... Still persists. I just noticed it may occur mostly when more than one tab is opened, even just two. Has anybody else encountered this? I use Firefox as my only browser-- on a Toshiba laptop. Thanks.

Hello! I saw that the Test day event had started. In Firefox Beta, I entered messaging-system-action.testday in about:config, put it on a string and set the value to testday as it said in the instructions. When I restarted Firefox, the welcome window did not appear and there was also no letter S next to the search as it should be. Please help!

Thanks for the answers!

Vexi

Running Win 11 and Firefox 14.1.0 both latest builds. When creating a new bookmark and saving it to the toolbar, the icon does not appear in the toolbar, although it is saved to the toolbar lists. https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-07-27-09-41-29-345609.png

I can no longer update or install extensions on my Firefox profile.

When I attempt to update, nothing happens. When I attempt to install a new extension, the Mozilla page states "Installation aborted because the add-on appears to be corrupt."

This appears to be a problem with my profile, because if I create a new profile, I can install extensions with it. However, I do not want to lose my existing extension settings or data.

The latest update 141.0 (64-bit) has changed my default save location from g.drive to users//downloads. How do I change it back to g.drive? I use Firefox synced between 2 computers (1 desktop and 1 laptop). I use google drive so that I can access the same information on both devices. I NEED screenshots to be saved in a specific folder in g.drive. How do I do this. Before this update, there was not this issue. Thanks in advance.

If I don't use the custom adjustments in my Chrome css, seven buttons on that right side of the menubar are hidden, including the min-max close buttons.

This is problematic when I'm troubleshooting Firefox, and the css is disabled. If I want to close or take the browser out of max mode, I must move those buttons to the navbar, which has no such restriction accommodating those buttons, not to mention why is it necessary for that min-max close trio to monopolize 20% of the menubar. Waste of space. Inefficient.

I'm also curious why must that frame at the top of this sites pages remains persistent, and follows the user down the page, so that when you're composing, and accidentally (and all to often) touch one of those links, it get superimposed over the message, and you must move the cursor to the bottom of the page get rid of it. Not to mention, that frame shrinks the working area of the page about 30% vertically.

I mean, once you have already navigated to the destination page, and you're composing, how often/likely are you going to need to access that area?

About two day ago my U Tube started not showing the normal size player but it shows one similar to the picture in picture. The sound is working fine. This is happening all three of my WIN10 computers when I use Firefox. If I go to MS Edge or Opera the U Tubes run just fine.

I hate both of those browsers and have used Firefox for years but I use U Tube a lot and I need a fix.

I am thinking that the latest Firefox update was about the time this started happening but I am not sure.

I have a Windows 11 Pro PC. Every Sunday morning for years I have downloaded snapshots from gocomics.com to a folder named Sunday on my desktop. Currently, I have Firefox set to send all downloads to C:\Users\hight\Desktop\Sunday⁩.

Just this week Firefox has been sending those snapshots to C:\Users\hight\Desktop\Downloads and I can’t seem to get Firefox to send the snapshots to my Sunday folder. How could I do that?

Thanks! Sheridan

当我有时候用火狐浏览知乎(https://www.zhihu.com/)的网页时，计算机会突然在没有任何提示的情况下自行重启。我不知道任何可能的原因，但这似乎是从今年才开始的（我一直保持更新浏览器）

When I view Zhihu (https://www.zhihu.com/) with Firefox, my computer sometimes reboot suddenly without any notice. I don't know why but it seems to begin from this year (I always keep updating firefox)

I had been using firefox on my mac, but all of a sudden it stopped working. When I try to search something or type in a website I just get the dot moving back and forth on the tab and the page never loads. Safari is working fine though.