Firefox Community Forum

I have "Open previous windows and tabs" and "Open Firefox automatically when your computer starts up" boxes checked in my settings.

Firefox is not opening automatically and my previous tabs are not showing up.

Thanks

Firefox with MAC OS 11.7.11 no longer works with SURFSHARK, TRANSMISSION OR FOLX I have reinstalled those applications I can start with my VPN (SURFSHARK) but as soon as I access a bit torrent, Firefox no longer functions.

I’m experiencing a strange issue on Firefox where a separate blank/dark window briefly appears over the browser while I’m browsing, then disappears.

The window appears to have the Firefox icon in the top-left and what looks like a Firefox tab/address-bar interface, but there is no visible text or error message.

It happens randomly while Firefox is open, including while watching YouTube. It does not appear when Firefox is closed.

Troubleshooting already performed:

• Windows 11 cloud reinstall using Remove everything
• New Microsoft account
• Defender Offline scan clean
• Multiple malware scanners clean
• Malwarebytes Premium installed
• uBlock Origin (only extension i use) removed/tested, but the issue remained

I took a picture showing the window appearing. Is this a known Firefox issue, background Firefox process, or something else?

Help! All of my bookmarks, browsing history, and profile prior to Sept 4, 2026 have been erased. Firefox instructions for restoring these prior bookmarks do not work. When I access "manage bookmarks" then the "Library", then "import & backup & restore", there is nothing listed prior to Sept 4, 2026. So there is no file to choose. Also my prior profile has been erased. My profile is completely blank altho I did NOT create a new profile nor did I access my profile in any way!!!

Also the instructions for "restore bookmarks from backup" do not work either. I desperately need that browsing history and those bookmarks. I am doing research for an art history project & those bookmarks for the last two years were stored there & seemed securely in place for the last three years. I need those bookmarks & the browsing history which included sites I used but did not necessarily cite in my research.

My bookmarks included the sole documentation I had of my research for this project for the last two years!!! When Firefox said it would continue to support Windows 10, I had no reason to believe my entire browsing history and/or my previously secure bookmarks would be erased. Help me restore those bookmarks. dona bretherick

I am wanting to automatically open the same set of websites each time I start Firefox without having to enter the information each time. This is possible with google chrome. Thank you.

We use the Deepl site for translations and it won't load in Firefox without asking the "verify you are human" questions every single time. The Deeple site does not require this authentication in Chrome but we hate Chrome and want to stick with Firefox. We just have the standard security settings in Firefox, only use Windows Firewall and our Express VPN is not switched on; our IP location is showing correctly. Firefox is up to date.

In previous versions of FFox when a file was being downloaded, a file download window opened for each file. Is that feature completely gone or is there still a way to open a window for each file?

My desktop Firefox (version 155.0.1) has recently became unable to consistently access the Web site at this Web site this Web site. Chrome successfully accesses the site 100% of the time. Firefox's connection failures are intermittent, unpredictable, and usually go away on their own after varying time intervals (sometimes can't connect for up to 24 hours). I see status messages saying Firefox is trying to connect to the site, but it eventually gives up and times out.

I cleared the Firefox cache, but that had no effect. I don't recall making any significant changes to the Firefox settings lately. Any suggestions on what to look at/try would be greatly appreciated.

(Yes, I know the site doesn't use https: Its protocol is outside my control).

The spacing between my Top Sites icons is way too large, making the grid look unnaturally stretched out and leaving too much empty space on the screen.Here is the weird behavior I noticed:When I run Firefox in Troubleshoot Mode (Safe Mode), the layout looks perfectly fine, tight, and compact — exactly how it used to be.If I use the "Refresh Firefox" feature, the compact layout returns to normal in the regular mode, but only temporarily. As soon as I launch Firefox in Troubleshoot Mode again and then switch back to the normal profile, the layout breaks once more, and the huge gaps between the shortcuts reappear.

I am getting a new Laptop, also a DELL as is this PC, both will be using Windows 11. I did this with the last HP laptop. I somehow installed Firefox on that old one automatically. Please give a list of the method to easily do this on the new machine. It seemed to look at the Firefox running on the PC and got all the data it needed to install on the new Laptop. Thanks in advance. JJEULER

I publish NinePane Connector at https://ninepane.com. On September 12, 2026, a Firefox test on Windows displayed NinePane-Connector-Setup-0.8.56-Windows-x64.exe as not commonly downloaded, with Remove file and Allow download controls. I have two matching Firefox screenshots of the warning.

The intended release candidate is distributed through our private authenticated test route. These screenshots do not establish the exact final download URL or completed bytes. The exact Firefox version and capture-time Windows build were not recorded, so I have not guessed them in this form.

The intended local candidate was independently checked as validly Authenticode signed by NINEPANE STUDIO with a timestamp. That identifies the signed local file; it is not proof of safety or of the blocked browser copy's exact bytes. We are not asserting malware detection or requesting a way to bypass the warning.

Which official publisher-support or assessment route applies to Firefox's uncommon-executable warning? Is there a supported way to obtain classification or remediation guidance without publishing a private installer or sharing login credentials? We have already reported the related Chrome warning to Google; should a publisher take any separate Firefox-specific action?

No installer, credentials, session data or unrelated browser diagnostics are included.

Hi! I reached out on Friday and was sent a code that expired in 5 minutes, missed the deadline and had to leave the library. I updated Firefox to 155 and can't find my bookmarks. Also found that a Microsoft update included Goggle Chrome that I uninstalled. Please advise on getting my bookmarks back thank you. I only have 30 minutes left on line. Thank you for all the work you volunteers are doing, greatly appreciated! Mark