Firefox Community Forum

I restarted Firefox today to find you have removed all my 100+ tabs, which I had arranged in folders, and replaced the vertical settings I had with Tree Style Tabs, which in the past has always run slow. I was greeted with childish graphics inviting me to set up a profile and offering me an introduction to Firefox. I have been using Firefox for years, mostly happily, until you screw up the view I had spent hours setting up. You are turning into a cheap Microsoft but with even less consideration for your users. Will you correct this or do I need to search for a new browser? Francis Shennan, LL.B Writer, journalist and law lecturer.

Once a week or so, Firefox crashes unexpectedly. The popup indicates its alerting Microsoft of the crash, but apparently not notifying Mozilla.

Once such a crash occurs, I close Firefox. Reopening it results in a crash shortly after all tabs open and I click on something (usually 3 or 4 tabs are open). No matter how many times I let Firefox close and then I reopen it, the crash recurs. The only recovery is a complete reboot of my PC.

How can I get and submit crash reports to support in hopes of getting a resolution?

I opened Firefox this morning and all of my pinned shortcuts have disappeared. Shortcuts are enabled in the settings. I checked the browser.newtabpage.pinned pref on the about:config and all of my pinned shortcuts are still there, but they're not appearing on the actual page itself. Are there any other settings that I'm not aware of?

When trying to access many popular websites with Firefox on my Fedora 43 installation, I am greeted with a security warning page with the SEC_ERROR_UNKNOWN_ISSUER error. For most of these websites I can simply accept and continue, but HSTS-only sites will not permit this.

Affected websites include but are not limited to (based on exceptions in the certificates section of Firefox settings):

• github.io (many subdomains)
• purdue.edu (many subdomains)
• iu.edu
• ebay.com
• cbsnews.com
• iwm.org.uk
• home.cern
• celestrak.org

Any help in resolving this is appreciated.

Near the top of the Firefox page is displayed:

"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 caused this problem".

How do I resolve this problem?

When I try to log on to a particular web page using my password, I get an error page. When I do so using the Private browse function it works. Following is the error I get: {

 "callId": "019a1701de257ed0a722da6257f2896e",
 "errorCode": 403005,
 "errorDetails": "Unauthorized user",
 "errorMessage": "Unauthorized user",
 "apiVersion": 2,
 "statusCode": 403,
 "statusReason": "Forbidden",
 "time": "2025-10-24T16:16:29.758Z"

}

Does anyone have any great ideas??

I have a firefox account that I use for work, which was created with my personal email address - "email"@"personalDomain".co.uk. When I try to log in using it I get a message saying that "personalDomain.co.uk" is not a valid email address. How can I log into my account which was created using this email address? The email address is valid and active, and I do have access to it.

When I open Amazon's page a splash screen appears that takes up a third of the screen. This splash screen provides keystroke shortcuts. Are you responsible. If HOW MAY I PERMANENTLY ELIMINATE THIS ANNOYANCE?

A recent update (https://windowsreport.com/firefox-fixes-an-8-year-old-windows-bug-that-broke-virtual-desktop-use/) has broken behavior I previously depended on as part of my workflows: If I clicked a link in one desktop, it would open that link in the browser instance on the last desktop I'd used, so I could keep all my browser windows on one virtual desktop full-screened for easy viewing, then slide back to my other workspaces for messaging/writing/etc.

Now, apparently as a bug fix, every time I try to open a link on a desktop, it creates a new Firefox instance in that desktop instead of opening the link in the browser I have open on other workspaces. This has dramatically impacted how I work. How can I restore the previous behavior? It is so disruptive having new windows opening all the time instead of keeping them in my dedicated browser workspace. If there isn't a fix for this, I will need to move to a new browser.

Earlier I logged in to Firefox to pose a question. Checking email, I had a notice from Mozilla that my account was used to sign in: Firefox on Windows 10 / United States (estimated) / Thursday, Oct 23, 2025.

Does Firefox think I'm using Win 10??? I checked my computer and it verifies that I am running Win 11 with all updates.

Call me confused. Or is this a non-issue? I ask because I'm trying to get into a member website and after I login, it takes me to a page that is for new signers ... not an existing member. Has happened several times.

Thanks,

Ron

I deleted all the shortcuts from Firefox desktop browser's homepage and now I cannot add them back.

There are no blank shortcut icons on the page anymore. No setting to enable them. Shortcuts are enabled. Page is mostly blank, only has Firefox icon.

I tried to close and open Firefox as well as disabling and enabling the shortcut setting. Adding more rows did not do anything.

Before this issue occurred, I had one shortcut on the page that was linking to localhost. I opened the edit window to the shortcut and pasted the same address and saved changes. After that I removed the shortcut. All of the blank tiles immediately got removed from page and I had no way of adding more shortcuts.

My Firefox account password is correct, but I cannot log in. The site says I need to complete the "Get Support" process before my account becomes active again. I don't understand what I need to do next or where to write the required information.

Please guide me step-by-step so I can reactivate my account. I am using a mobile device.

Thank you for your help.