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I have been using Thunderbird for 20+ years and am on the latest version, but trying to eliminate what I believe to be old files from legacy versions that have been left behind. I don't want to delete anything and break Thunderbird, but wondered if these files were redundant:

abook.v2.sqlite + abook.v3.sqlite

These haven't changed since 2021 & 2022 apparently.

Also, I have a lot of address books (I find using addresses in a given address book excellent for email filters). Are abook-1.sqlite, abook-2.sqlite etc my individual address books?

If so, how can I tell which file belongs to which address book?

I also have v2 and v3 files (eg: abook-1.v2.sqlite) for most of these.

Hopefully this makes sense. Thanks in advance for any help.

Using 140.2.1esr (64-bit) on Win, laptop has plenty of disk space free. When writing a long-ish message, I want to stop and think, so I do Ctrl S to Save... Sometimes works fine. Sometimes Thunderbird hangs and does not save, so I lose everything I wrote, very frustrating. Problem happened off and on during many weeks. I cannot replicate the problem on demand. Shut down- restart did not help. Any help will be much appreciated thanks.

Hi everyone, I’m facing a very strange issue when trying to authenticate a Hotmail account via Microsoft OAuth2 in Thunderbird (and also in Firefox).

When the Microsoft login popup appears, I **cannot focus the password field or the verification code field**. The focus just cycles through other UI elements (buttons, dots at the bottom right, etc.), but **never stays inside the input field**, so I can’t type anything. Clicking into the field does not help — the focus immediately jumps away again.

This only happens in:

• Thunderbird 128.12.0 ESR (32-bit) on Windows 10
• Firefox (same behavior)

But Edge and Chrome work normally.

What I already tried (no success):

- Removing OAuth tokens and clearing authentication files in Thunderbird - Disabling Enhanced Tracking Protection in Firefox - Disabling browser extensions (ad-blockers, NoScript, Privacy tools) - Checking and modifying Firefox `about:config` privacy settings - Clearing and re-authorizing the app under Microsoft Account permissions - Restarting in Firefox Troubleshooting Mode - Switching temporarily between OAuth2 and Normal Password authentication - Testing on fresh login windows after restarting Thunderbird - Maximizing the popup, using tab/keyboard navigation tricks - Turning off Windows Security controlled folder access - Testing with different networks

None of the above solved the issue.

Additional notes / clues:

• Problem affects only **Thunderbird + Firefox**, not Chromium browsers
• Windows 10 system
• Thunderbird is running **32-bit ESR**, so it uses Gecko/Firefox ESR 115 engine
• This looks like a **focus bug in the Microsoft OAuth WebView implementation** on Gecko-based apps
• I can't complete the OAuth login, so I’m stuck without access to the account

What I’m asking the community:

• Is this a **known ESR bug** with Microsoft OAuth?
• Is there a workaround or patch for Gecko WebView secure input fields?
• Any configuration that I may have missed?

Any help or guidance would be greatly appreciated. Thanks in advance!

Roberto

Hello

I just tried to make my first ever donation to Thunderbird, 3 USD per month which won't leave me short at the end of this or any month, (rather than a 36 USD donation once), but it got refused as the minimum amount is 5 USD

Very surprised by this. I know 3 USD per month is not a lot but if every user donated instead of just 3%, it would be a fortune for TB

As is well known, Firefox China（ https://www.firefox.com.cn , which is now inaccessible and can be viewed on the history page in the Internet Archive.) The service was stopped a few days ago, which led to the removal of Firefox for Android from all app markets in Chinese Mainland, which means that users in Chinese Mainland will not be able to download Firefox for Android. After all, users in Chinese Mainland cannot access Google App Store. May I ask if there is any solution? Of course, I would prefer the Firefox team to restore the listing of major Chinese app stores.

简体中文标题：中国大陆用户如何下载Firefox for Android？

众所周知，Firefox中国（https://www.firefox.com.cn，现已不可访问，可在互联网档案馆查看历史页面）在前些时间停止了服务，导致所有中国大陆的应用市场都下架了Firefox for Android，这意味着中国大陆用户将无法下载Firefox for Android，毕竟中国大陆用户并不能访问谷歌应用商店。请问有什么解决办法吗？当然，我更希望Firefox团队可以恢复上架各大中国应用商店。

I was thinking use clear data to free up some space for my storage, so I sync with sync 0 min ago display. I log back in, everything disappear. Little stressed. Anyway to get back my data?

Other info: Before press sync, did display sync 3 min ago, after press sync, display sync 0 min ago

Account only use on Android, doesn't sync to other device

bol it's really frustrating because again I only have one device a Motorola cell phone and I don't have any kind of computers or laptops or anything else and it's always talking me to sync my tabs for my other devices and this and that and it's really frustrating because I don't work I'm on ssti I don't go to school and it's always telling me that my I have an administrator on my account that's for my work or school or something like that when all it is is hackers have taken over my phone and hijacked everything in my life because of my old roommate David Floyd Lee

Ive been trying to figure out how to change the Firefox background to add my own picture and I can't find it even themes for the mobile version if this feature already exist make it more accessible like in the customization settings

I'm not an expert so my apologies for any ignorance or "non technical" talk. I've an account on a website. I signed out and then revisit that website as a guest and they says "Welcome Back". I tried to chat with online agent and they know that I'm an existing user. (Although they didn't mention my user name etc but still they know that I often visit their site.) I clear all relevant cookies of that website and even restarted Firefox but still the same situation. Even I tried to use a VPN but same. Just curious how do they know that I've been visiting this website before. Thanks for help.

I don't use FF on my iPhone XR.. but had previously connected my phone to computer via usb. My iPhone says the password is compromised! Does that mean that all of my passwords on my phone are also compromised? I have no idea what a password for firefox.com is used to access. It is not my master password that I normally use when logging into FF on my Win10, or previous Win7 OS. Can someone tell me what the password is for, or what it controls or protects? Do I delete it, or change it?? Thanks

I'm using my FF 145.0.2 on Win10 to post this question. I've never seen a request for a firefox.com password on my computer.