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Hello Mozilla Support Team,

I am writing to request assistance with recovering my Firefox Sync data.

I recently reset my PC and after reinstalling Firefox and logging back into my Firefox account, my bookmarks and saved passwords are completely gone. I believe the sync may have overwritten the server-side data with an empty local profile after the reset.

Account email: [edited from public] @gmail.com Approximate date of data loss: 02 25 2026

I had been accumulating this data for approximately 1 years and it is very important to me. Could you please check if there is any backup of my sync data on your servers that could be restored?

Thank you for your help.

Good morning all.

I was wondering if someone could assist me in standardizing email signatures when sending a new email, and replying to an email. Let me elaborate a little bit...

When I compose a new email, my signature comes out like what you see in the `composing.jpg` attachment.

When I reply to an email, my signature comes out like what you see in the `replies.jpg` attachment.

I appreciate any assistance someone can provide, and guide me to the best way of standardizing these bad boys.

Have a great day!

I've always experience occasional TB crashes. According to my log history there was 1 in July, 3 in Aug, 2 in Sep, 2 in Oct, and 6 in Nov. I never really paid attention since the reboot was quick. But now in December I am losing work and it is a major problem. I've had 30 crashes in Dec and 21 in the past week. I have only 3 add ons and they have not changed, and a Copernic connector. I disable the Copernic connector and it didn't help. I have the same 140.6 on my Surface Go with the same add ons, except for Copernic and it runs fine. On both PCs I use Malewarebytes and WinDef. I have put exclusions for them in their setups. Even with MBAM completely disabled I've still had crashes.

I cleared the Cache and no help. I've even had occasional crashes in Troubleshooting mode. Here are my last 5 crash IDs

bp-070bf941-4e8b-41a3-8b84-3e3440251224 bp-a936f7c2-9ee3-4c38-b304-dab830251224 bp-8be9cf9e-8f2f-49bb-95cf-47e780251224 bp-12f8fc2c-c505-40f0-8c67-44b730251224 bp-9013fb78-086c-4327-9de8-62db30251223

Interestingly I’m also experiencing crashes with Firefox, especially ChatGPT. I cleared the ChatGPT history and that helped but did not solve the problem. I cleared the Firefox cache and in troubleshoot mode still have issues.

Otherwise my win11 PC seems to be working fine. I’ve run chkdsk and all is ok. Also scannow is ok.

Is my next step a profile rebuild?

Hi, I have moved to a new computer and transferred my Thunderbird account to it without any problems. However, I wanted to do a backup of my profiles, etc, but the old Thunderbird backup link no longer works. Has it been discontinued, and if so, what replaces it?

I need predictability where I can find it. Thunderbird opens how I left it, so I never know what's going to appear when I start it the next day. Isn't there some setting so that it always opens showing all 3 panes, regardless of my laziness at exit? It would also help with my autohotkey script if it knew what to expect. I suspect the lack of answers in my search suggests there is no such setting. How about a command line argument?

Hallo, ich hatte ein Password verdecken, aber mache ich nicht mehr. Ich wolle das Password loschen, das geben aber nicht. brauche auch nicht nehnen Password. Bitte helfen, danke. Andrea

Hi,

At some point in the last couple of weeks, I've started running into very frequent crashes running Firefox in the Linux container on my Chromebook. It previously worked well, but is now unusable. I'm now running Firefox version 147.0.3 on Chrome version 144.0.7559.167. This is after I did a clean reinstall of Firefox using flatpak, which didn't help. It seems like it often happens when my mouse hovers over a browser tab or icon (eg account, extensions, hamburger). Other quirky display behaviour, which mayor may not related, is that videos are often not working (eg Youtube, BBC), and various browser windows (eg when selecting Manage Bookmarks, or restarting in safe mode), open a small size-reduced window. Latest crash reports below -

bp-79d9b303-4402-455b-b49b-bbc1e0260209 bp-58276587-1315-4431-beba-4d9230260209 bp-0f499a5f-34e7-4a1d-8789-e8dc80260209 bp-a2ccec4c-087d-4e39-8af6-cbb740260209 bp-59770723-c637-4689-ae2f-a203f0260209

Thanks for any suggestions.

I want to use TB as client for a twc.com account. I do not want a TB email account; I want to use it to access my existing twc.com account. I have downloaded TB but the only option I see is to open a TB email account, which is not my goal. How can I find the option to open the TB site and setup to use TB as client for a twc.com account?

email address no longer imports new mail. The mail is there if I go into Gmail directly, but not Tbird. I have three email addresses, the main one only has stopped importing mail. How do I fix this?

When using the AI chatbot in the Firefox browser, I cannot click to the left of a certain coordinate only when Claude is open. This issue does not occur with other AI bots (such as ChatGPT or Gemini). What could be the cause? My environment is as follows:

OS: Windows 11 Pro x64 Firefox version: 147.0.4

Additionally, tabs are set to vertical display, and the sidebar expands only when the cursor hovers over it.

Thanks.

When I am using the Firefox browser and am on a site that asks for my email, there is a Firefox dropdown with a list of email addresses. There are many email addresses on this drop down list and I cannot find where I can edit that list.

Nothing is the Autofill settings comes up. Where is that list of autofill email addresses?

Since updating Firefox from a previous version, the browser no longer displays any Unicode emoji characters. Where an emoji would normally be rendered (👁️), the browser instead displays empty space. Websites such as twitter and discord, which use their own artwork for emoji, are unaffected. This has negatively affected my browsing experience.

For illustrative purposes, I will add a series of emoji and include a screenshot of how they are displayed: (😀🙁😡💀). Other characters still display correctly: (β❖♞䷲⎈𐘢𓀺இ). My computer otherwise displays emoji correctly. The issue persists after disabling extensions, and has persisted between computer restarts.

I am using Firefox version 147.0.4 (aarch64) on a Macbook Air running macOS Sequoia 15.5.

Good day! Initially, I installed Firefox version (x64 ru) 147.0.3. After updating via the "Help - About Firefox - Update" menu, I received version 147.0.4. However, there are two entries about installed Firefox in the Windows section "Installed applications": 1. Mozilla Firefox (x64 ru) 147.0.3 and 2. Mozilla Firefox (x64 ru) 147.0.4. Although one instance of the program is installed. How do I remove an extra entry? Thank you.

PS: I have Windows 11 Pro 25H2 (26200.7840, 1000.26100.291.0) Russian CPU AMD Ryzen 5 5600X 6-Core Processor RAM 32,0 ГБ System x64 Video NVidia GeForce 1650

I have a question about deleting a Firefox profile. When I access the profile screen via "about:profiles," I see two profiles: "default-release" and "Default User." The "default-release" profile is fine because it displays the message "This is the active profile and cannot be deleted." But is it okay to delete the "Default User" profile? Should I also delete the files in the root directory of the C: drive and the local directory? If I delete the "Default User", will it be deleted as well?

Hello,

This morning Firefox stopped loading new tabs, which usually means it is due for an update and restart. On my work computer, updates are managed by my organization, so I cannot prompt it to check for updates directly, but rather can just restart the application and it updates once closed. Today when I closed the window then clicked the shortcut to reopen, it notified me the exe file had been removed and prompted me to open the Windows store and reinstall, which I did. I have no indication as to why it uninstalled. All of my bookmarks and other history appear to have been wiped.

I have been trying on the support site to see if this data is recoverable, but nothing has panned out so far.

I have used Firefox as my primary browser for almost twenty years and frequently encourage friends and family to use it if they don't already. I have never experienced anything like this before. I am hopeful somebody will be able to assist me where reading through support center options hasn't yet, but if this is not resolvable, I'm done- the crash helpfully wiped everything clean, after all.

Any suggestions or response is greatly appreciated. Best, Z